20197726420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:358

約数の個数: 96

約数和(自身を含む): 44268456960

約数和(自身を除く): 24070730540

約数列:

[1, 2, 4, 5, 10, 20, 47, 71, 94, 137, 142, 188, 235, 274, 284, 355, 470, 548, 685, 710, 940, 1370, 1420, 2209, 2740, 3337, 4418, 6439, 6674, 8836, 9727, 11045, 12878, 13348, 16685, 19454, 22090, 25756, 32195, 33370, 38908, 44180, 48635, 64390, 66740, 97270, 103823, 128780, 156839, 194540, 207646, 302633, 313678, 415292, 457169, 519115, 605266, 627356, 784195, 914338, 1038230, 1210532, 1513165, 1568390, 1828676, 2076460, 2285845, 3026330, 3136780, 4571690, 6052660, 7371433, 9143380, 14223751, 14742866, 21486943, 28447502, 29485732, 36857165, 42973886, 56895004, 71118755, 73714330, 85947772, 107434715, 142237510, 147428660, 214869430, 284475020, 429738860, 1009886321, 2019772642, 4039545284, 5049431605, 10098863210, 20197726420]

約数ペア:

[(1, 20197726420), (2, 10098863210), (4, 5049431605), (5, 4039545284), (10, 2019772642), (20, 1009886321), (47, 429738860), (71, 284475020), (94, 214869430), (137, 147428660), (142, 142237510), (188, 107434715), (235, 85947772), (274, 73714330), (284, 71118755), (355, 56895004), (470, 42973886), (548, 36857165), (685, 29485732), (710, 28447502), (940, 21486943), (1370, 14742866), (1420, 14223751), (2209, 9143380), (2740, 7371433), (3337, 6052660), (4418, 4571690), (6439, 3136780), (6674, 3026330), (8836, 2285845), (9727, 2076460), (11045, 1828676), (12878, 1568390), (13348, 1513165), (16685, 1210532), (19454, 1038230), (22090, 914338), (25756, 784195), (32195, 627356), (33370, 605266), (38908, 519115), (44180, 457169), (48635, 415292), (64390, 313678), (66740, 302633), (97270, 207646), (103823, 194540), (128780, 156839)]