259807360

素因数分解:

$2^7\times 5^1\times {\mathrm{405949}}^1$

素因数の和:405968

約数の個数: 32

約数和(自身を含む): 621103500

約数和(自身を除く): 361296140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 405949, 811898, 1623796, 2029745, 3247592, 4059490, 6495184, 8118980, 12990368, 16237960, 25980736, 32475920, 51961472, 64951840, 129903680, 259807360]

約数ペア:

[(1, 259807360), (2, 129903680), (4, 64951840), (5, 51961472), (8, 32475920), (10, 25980736), (16, 16237960), (20, 12990368), (32, 8118980), (40, 6495184), (64, 4059490), (80, 3247592), (128, 2029745), (160, 1623796), (320, 811898), (640, 405949)]