638430580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:649

約数の個数: 96

約数和(自身を含む): 1469664000

約数和(自身を除く): 831233420

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 53, 68, 71, 85, 106, 142, 170, 212, 265, 284, 340, 355, 499, 530, 710, 901, 998, 1060, 1207, 1420, 1802, 1996, 2414, 2495, 3604, 3763, 4505, 4828, 4990, 6035, 7526, 8483, 9010, 9980, 12070, 15052, 16966, 18020, 18815, 24140, 26447, 33932, 35429, 37630, 42415, 52894, 63971, 70858, 75260, 84830, 105788, 127942, 132235, 141716, 169660, 177145, 255884, 264470, 319855, 354290, 449599, 528940, 602293, 639710, 708580, 899198, 1204586, 1279420, 1798396, 1877737, 2247995, 2409172, 3011465, 3755474, 4495990, 6022930, 7510948, 8991980, 9388685, 12045860, 18777370, 31921529, 37554740, 63843058, 127686116, 159607645, 319215290, 638430580]

約数ペア:

[(1, 638430580), (2, 319215290), (4, 159607645), (5, 127686116), (10, 63843058), (17, 37554740), (20, 31921529), (34, 18777370), (53, 12045860), (68, 9388685), (71, 8991980), (85, 7510948), (106, 6022930), (142, 4495990), (170, 3755474), (212, 3011465), (265, 2409172), (284, 2247995), (340, 1877737), (355, 1798396), (499, 1279420), (530, 1204586), (710, 899198), (901, 708580), (998, 639710), (1060, 602293), (1207, 528940), (1420, 449599), (1802, 354290), (1996, 319855), (2414, 264470), (2495, 255884), (3604, 177145), (3763, 169660), (4505, 141716), (4828, 132235), (4990, 127942), (6035, 105788), (7526, 84830), (8483, 75260), (9010, 70858), (9980, 63971), (12070, 52894), (15052, 42415), (16966, 37630), (18020, 35429), (18815, 33932), (24140, 26447)]