18299920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:248

約数の個数: 80

約数和(自身を含む): 45139968

約数和(自身を除く): 26840048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 47, 62, 80, 94, 124, 155, 157, 188, 235, 248, 310, 314, 376, 470, 496, 620, 628, 752, 785, 940, 1240, 1256, 1457, 1570, 1880, 2480, 2512, 2914, 3140, 3760, 4867, 5828, 6280, 7285, 7379, 9734, 11656, 12560, 14570, 14758, 19468, 23312, 24335, 29140, 29516, 36895, 38936, 48670, 58280, 59032, 73790, 77872, 97340, 116560, 118064, 147580, 194680, 228749, 295160, 389360, 457498, 590320, 914996, 1143745, 1829992, 2287490, 3659984, 4574980, 9149960, 18299920]

約数ペア:

[(1, 18299920), (2, 9149960), (4, 4574980), (5, 3659984), (8, 2287490), (10, 1829992), (16, 1143745), (20, 914996), (31, 590320), (40, 457498), (47, 389360), (62, 295160), (80, 228749), (94, 194680), (124, 147580), (155, 118064), (157, 116560), (188, 97340), (235, 77872), (248, 73790), (310, 59032), (314, 58280), (376, 48670), (470, 38936), (496, 36895), (620, 29516), (628, 29140), (752, 24335), (785, 23312), (940, 19468), (1240, 14758), (1256, 14570), (1457, 12560), (1570, 11656), (1880, 9734), (2480, 7379), (2512, 7285), (2914, 6280), (3140, 5828), (3760, 4867)]