1388487160

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{19961}}^1$

素因数の和:20056

約数の個数: 64

約数和(自身を含む): 3276961920

約数和(自身を除く): 1888474760

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 47, 74, 94, 148, 185, 188, 235, 296, 370, 376, 470, 740, 940, 1480, 1739, 1880, 3478, 6956, 8695, 13912, 17390, 19961, 34780, 39922, 69560, 79844, 99805, 159688, 199610, 399220, 738557, 798440, 938167, 1477114, 1876334, 2954228, 3692785, 3752668, 4690835, 5908456, 7385570, 7505336, 9381670, 14771140, 18763340, 29542280, 34712179, 37526680, 69424358, 138848716, 173560895, 277697432, 347121790, 694243580, 1388487160]

約数ペア:

[(1, 1388487160), (2, 694243580), (4, 347121790), (5, 277697432), (8, 173560895), (10, 138848716), (20, 69424358), (37, 37526680), (40, 34712179), (47, 29542280), (74, 18763340), (94, 14771140), (148, 9381670), (185, 7505336), (188, 7385570), (235, 5908456), (296, 4690835), (370, 3752668), (376, 3692785), (470, 2954228), (740, 1876334), (940, 1477114), (1480, 938167), (1739, 798440), (1880, 738557), (3478, 399220), (6956, 199610), (8695, 159688), (13912, 99805), (17390, 79844), (19961, 69560), (34780, 39922)]