256507900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:125

約数の個数: 216

約数和(自身を含む): 685737360

約数和(自身を除く): 429229460

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 25, 29, 34, 43, 44, 50, 55, 58, 68, 85, 86, 100, 110, 116, 121, 145, 170, 172, 187, 215, 220, 242, 275, 290, 319, 340, 374, 425, 430, 473, 484, 493, 550, 580, 605, 638, 725, 731, 748, 850, 860, 935, 946, 986, 1075, 1100, 1210, 1247, 1276, 1450, 1462, 1595, 1700, 1870, 1892, 1972, 2057, 2150, 2365, 2420, 2465, 2494, 2900, 2924, 3025, 3190, 3509, 3655, 3740, 4114, 4300, 4675, 4730, 4930, 4988, 5203, 5423, 6050, 6235, 6380, 7018, 7310, 7975, 8041, 8228, 9350, 9460, 9860, 10285, 10406, 10846, 11825, 12100, 12325, 12470, 13717, 14036, 14620, 15950, 16082, 17545, 18275, 18700, 20570, 20812, 21199, 21692, 23650, 24650, 24940, 26015, 27115, 27434, 31175, 31900, 32164, 35090, 36550, 40205, 41140, 42398, 47300, 49300, 51425, 52030, 54230, 54868, 59653, 62350, 68585, 70180, 73100, 80410, 84796, 87725, 88451, 102850, 104060, 105995, 108460, 119306, 124700, 130075, 135575, 137170, 150887, 160820, 175450, 176902, 201025, 205700, 211990, 233189, 238612, 260150, 271150, 274340, 298265, 301774, 342925, 350900, 353804, 402050, 423980, 442255, 466378, 520300, 529975, 542300, 596530, 603548, 685850, 754435, 804100, 884510, 932756, 1059950, 1165945, 1193060, 1371700, 1491325, 1508870, 1769020, 2119900, 2211275, 2331890, 2565079, 2982650, 3017740, 3772175, 4422550, 4663780, 5130158, 5829725, 5965300, 7544350, 8845100, 10260316, 11659450, 12825395, 15088700, 23318900, 25650790, 51301580, 64126975, 128253950, 256507900]

約数ペア:

[(1, 256507900), (2, 128253950), (4, 64126975), (5, 51301580), (10, 25650790), (11, 23318900), (17, 15088700), (20, 12825395), (22, 11659450), (25, 10260316), (29, 8845100), (34, 7544350), (43, 5965300), (44, 5829725), (50, 5130158), (55, 4663780), (58, 4422550), (68, 3772175), (85, 3017740), (86, 2982650), (100, 2565079), (110, 2331890), (116, 2211275), (121, 2119900), (145, 1769020), (170, 1508870), (172, 1491325), (187, 1371700), (215, 1193060), (220, 1165945), (242, 1059950), (275, 932756), (290, 884510), (319, 804100), (340, 754435), (374, 685850), (425, 603548), (430, 596530), (473, 542300), (484, 529975), (493, 520300), (550, 466378), (580, 442255), (605, 423980), (638, 402050), (725, 353804), (731, 350900), (748, 342925), (850, 301774), (860, 298265), (935, 274340), (946, 271150), (986, 260150), (1075, 238612), (1100, 233189), (1210, 211990), (1247, 205700), (1276, 201025), (1450, 176902), (1462, 175450), (1595, 160820), (1700, 150887), (1870, 137170), (1892, 135575), (1972, 130075), (2057, 124700), (2150, 119306), (2365, 108460), (2420, 105995), (2465, 104060), (2494, 102850), (2900, 88451), (2924, 87725), (3025, 84796), (3190, 80410), (3509, 73100), (3655, 70180), (3740, 68585), (4114, 62350), (4300, 59653), (4675, 54868), (4730, 54230), (4930, 52030), (4988, 51425), (5203, 49300), (5423, 47300), (6050, 42398), (6235, 41140), (6380, 40205), (7018, 36550), (7310, 35090), (7975, 32164), (8041, 31900), (8228, 31175), (9350, 27434), (9460, 27115), (9860, 26015), (10285, 24940), (10406, 24650), (10846, 23650), (11825, 21692), (12100, 21199), (12325, 20812), (12470, 20570), (13717, 18700), (14036, 18275), (14620, 17545), (15950, 16082)]