280078700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{293}}^1$

素因数の和:408

約数の個数: 108

約数和(自身を含む): 678810720

約数和(自身を除く): 398732020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 79, 100, 110, 121, 158, 220, 242, 275, 293, 316, 395, 484, 550, 586, 605, 790, 869, 1100, 1172, 1210, 1465, 1580, 1738, 1975, 2420, 2930, 3025, 3223, 3476, 3950, 4345, 5860, 6050, 6446, 7325, 7900, 8690, 9559, 12100, 12892, 14650, 16115, 17380, 19118, 21725, 23147, 29300, 32230, 35453, 38236, 43450, 46294, 47795, 64460, 70906, 80575, 86900, 92588, 95590, 115735, 141812, 161150, 177265, 191180, 231470, 238975, 254617, 322300, 354530, 462940, 477950, 509234, 578675, 709060, 886325, 955900, 1018468, 1157350, 1273085, 1772650, 2314700, 2546170, 2800787, 3545300, 5092340, 5601574, 6365425, 11203148, 12730850, 14003935, 25461700, 28007870, 56015740, 70019675, 140039350, 280078700]

約数ペア:

[(1, 280078700), (2, 140039350), (4, 70019675), (5, 56015740), (10, 28007870), (11, 25461700), (20, 14003935), (22, 12730850), (25, 11203148), (44, 6365425), (50, 5601574), (55, 5092340), (79, 3545300), (100, 2800787), (110, 2546170), (121, 2314700), (158, 1772650), (220, 1273085), (242, 1157350), (275, 1018468), (293, 955900), (316, 886325), (395, 709060), (484, 578675), (550, 509234), (586, 477950), (605, 462940), (790, 354530), (869, 322300), (1100, 254617), (1172, 238975), (1210, 231470), (1465, 191180), (1580, 177265), (1738, 161150), (1975, 141812), (2420, 115735), (2930, 95590), (3025, 92588), (3223, 86900), (3476, 80575), (3950, 70906), (4345, 64460), (5860, 47795), (6050, 46294), (6446, 43450), (7325, 38236), (7900, 35453), (8690, 32230), (9559, 29300), (12100, 23147), (12892, 21725), (14650, 19118), (16115, 17380)]