320869360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{1361}}^1$

素因数の和:1802

約数の個数: 80

約数和(自身を含む): 855248832

約数和(自身を除く): 534379472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 421, 560, 842, 1361, 1684, 2105, 2722, 2947, 3368, 4210, 5444, 5894, 6736, 6805, 8420, 9527, 10888, 11788, 13610, 14735, 16840, 19054, 21776, 23576, 27220, 29470, 33680, 38108, 47152, 47635, 54440, 58940, 76216, 95270, 108880, 117880, 152432, 190540, 235760, 381080, 572981, 762160, 1145962, 2291924, 2864905, 4010867, 4583848, 5729810, 8021734, 9167696, 11459620, 16043468, 20054335, 22919240, 32086936, 40108670, 45838480, 64173872, 80217340, 160434680, 320869360]

約数ペア:

[(1, 320869360), (2, 160434680), (4, 80217340), (5, 64173872), (7, 45838480), (8, 40108670), (10, 32086936), (14, 22919240), (16, 20054335), (20, 16043468), (28, 11459620), (35, 9167696), (40, 8021734), (56, 5729810), (70, 4583848), (80, 4010867), (112, 2864905), (140, 2291924), (280, 1145962), (421, 762160), (560, 572981), (842, 381080), (1361, 235760), (1684, 190540), (2105, 152432), (2722, 117880), (2947, 108880), (3368, 95270), (4210, 76216), (5444, 58940), (5894, 54440), (6736, 47635), (6805, 47152), (8420, 38108), (9527, 33680), (10888, 29470), (11788, 27220), (13610, 23576), (14735, 21776), (16840, 19054)]