815920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:98

約数の個数: 80

約数和(自身を含む): 2285568

約数和(自身を除く): 1469648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 47, 56, 62, 70, 80, 94, 112, 124, 140, 155, 188, 217, 235, 248, 280, 310, 329, 376, 434, 470, 496, 560, 620, 658, 752, 868, 940, 1085, 1240, 1316, 1457, 1645, 1736, 1880, 2170, 2480, 2632, 2914, 3290, 3472, 3760, 4340, 5264, 5828, 6580, 7285, 8680, 10199, 11656, 13160, 14570, 17360, 20398, 23312, 26320, 29140, 40796, 50995, 58280, 81592, 101990, 116560, 163184, 203980, 407960, 815920]

約数ペア:

[(1, 815920), (2, 407960), (4, 203980), (5, 163184), (7, 116560), (8, 101990), (10, 81592), (14, 58280), (16, 50995), (20, 40796), (28, 29140), (31, 26320), (35, 23312), (40, 20398), (47, 17360), (56, 14570), (62, 13160), (70, 11656), (80, 10199), (94, 8680), (112, 7285), (124, 6580), (140, 5828), (155, 5264), (188, 4340), (217, 3760), (235, 3472), (248, 3290), (280, 2914), (310, 2632), (329, 2480), (376, 2170), (434, 1880), (470, 1736), (496, 1645), (560, 1457), (620, 1316), (658, 1240), (752, 1085), (868, 940)]