256804080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1553}}^1$

素因数の和:1635

約数の個数: 160

約数和(自身を含む): 874069056

約数和(自身を除く): 617264976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 53, 60, 65, 78, 80, 104, 106, 120, 130, 156, 159, 195, 208, 212, 240, 260, 265, 312, 318, 390, 424, 520, 530, 624, 636, 689, 780, 795, 848, 1040, 1060, 1272, 1378, 1553, 1560, 1590, 2067, 2120, 2544, 2756, 3106, 3120, 3180, 3445, 4134, 4240, 4659, 5512, 6212, 6360, 6890, 7765, 8268, 9318, 10335, 11024, 12424, 12720, 13780, 15530, 16536, 18636, 20189, 20670, 23295, 24848, 27560, 31060, 33072, 37272, 40378, 41340, 46590, 55120, 60567, 62120, 74544, 80756, 82309, 82680, 93180, 100945, 121134, 124240, 161512, 164618, 165360, 186360, 201890, 242268, 246927, 302835, 323024, 329236, 372720, 403780, 411545, 484536, 493854, 605670, 658472, 807560, 823090, 969072, 987708, 1070017, 1211340, 1234635, 1316944, 1615120, 1646180, 1975416, 2140034, 2422680, 2469270, 3210051, 3292360, 3950832, 4280068, 4845360, 4938540, 5350085, 6420102, 6584720, 8560136, 9877080, 10700170, 12840204, 16050255, 17120272, 19754160, 21400340, 25680408, 32100510, 42800680, 51360816, 64201020, 85601360, 128402040, 256804080]

約数ペア:

[(1, 256804080), (2, 128402040), (3, 85601360), (4, 64201020), (5, 51360816), (6, 42800680), (8, 32100510), (10, 25680408), (12, 21400340), (13, 19754160), (15, 17120272), (16, 16050255), (20, 12840204), (24, 10700170), (26, 9877080), (30, 8560136), (39, 6584720), (40, 6420102), (48, 5350085), (52, 4938540), (53, 4845360), (60, 4280068), (65, 3950832), (78, 3292360), (80, 3210051), (104, 2469270), (106, 2422680), (120, 2140034), (130, 1975416), (156, 1646180), (159, 1615120), (195, 1316944), (208, 1234635), (212, 1211340), (240, 1070017), (260, 987708), (265, 969072), (312, 823090), (318, 807560), (390, 658472), (424, 605670), (520, 493854), (530, 484536), (624, 411545), (636, 403780), (689, 372720), (780, 329236), (795, 323024), (848, 302835), (1040, 246927), (1060, 242268), (1272, 201890), (1378, 186360), (1553, 165360), (1560, 164618), (1590, 161512), (2067, 124240), (2120, 121134), (2544, 100945), (2756, 93180), (3106, 82680), (3120, 82309), (3180, 80756), (3445, 74544), (4134, 62120), (4240, 60567), (4659, 55120), (5512, 46590), (6212, 41340), (6360, 40378), (6890, 37272), (7765, 33072), (8268, 31060), (9318, 27560), (10335, 24848), (11024, 23295), (12424, 20670), (12720, 20189), (13780, 18636), (15530, 16536)]