21841840

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:254

約数の個数: 80

約数和(自身を含む): 53603712

約数和(自身を除く): 31761872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 47, 74, 80, 94, 148, 157, 185, 188, 235, 296, 314, 370, 376, 470, 592, 628, 740, 752, 785, 940, 1256, 1480, 1570, 1739, 1880, 2512, 2960, 3140, 3478, 3760, 5809, 6280, 6956, 7379, 8695, 11618, 12560, 13912, 14758, 17390, 23236, 27824, 29045, 29516, 34780, 36895, 46472, 58090, 59032, 69560, 73790, 92944, 116180, 118064, 139120, 147580, 232360, 273023, 295160, 464720, 546046, 590320, 1092092, 1365115, 2184184, 2730230, 4368368, 5460460, 10920920, 21841840]

約数ペア:

[(1, 21841840), (2, 10920920), (4, 5460460), (5, 4368368), (8, 2730230), (10, 2184184), (16, 1365115), (20, 1092092), (37, 590320), (40, 546046), (47, 464720), (74, 295160), (80, 273023), (94, 232360), (148, 147580), (157, 139120), (185, 118064), (188, 116180), (235, 92944), (296, 73790), (314, 69560), (370, 59032), (376, 58090), (470, 46472), (592, 36895), (628, 34780), (740, 29516), (752, 29045), (785, 27824), (940, 23236), (1256, 17390), (1480, 14758), (1570, 13912), (1739, 12560), (1880, 11618), (2512, 8695), (2960, 7379), (3140, 6956), (3478, 6280), (3760, 5809)]