407960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:96

約数の個数: 64

約数和(自身を含む): 1105920

約数和(自身を除く): 697960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 47, 56, 62, 70, 94, 124, 140, 155, 188, 217, 235, 248, 280, 310, 329, 376, 434, 470, 620, 658, 868, 940, 1085, 1240, 1316, 1457, 1645, 1736, 1880, 2170, 2632, 2914, 3290, 4340, 5828, 6580, 7285, 8680, 10199, 11656, 13160, 14570, 20398, 29140, 40796, 50995, 58280, 81592, 101990, 203980, 407960]

約数ペア:

[(1, 407960), (2, 203980), (4, 101990), (5, 81592), (7, 58280), (8, 50995), (10, 40796), (14, 29140), (20, 20398), (28, 14570), (31, 13160), (35, 11656), (40, 10199), (47, 8680), (56, 7285), (62, 6580), (70, 5828), (94, 4340), (124, 3290), (140, 2914), (155, 2632), (188, 2170), (217, 1880), (235, 1736), (248, 1645), (280, 1457), (310, 1316), (329, 1240), (376, 1085), (434, 940), (470, 868), (620, 658)]