81506930

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:243

約数の個数: 64

約数和(自身を含む): 158906880

約数和(自身を除く): 77399950

約数列:

[1, 2, 5, 10, 37, 43, 47, 74, 86, 94, 109, 185, 215, 218, 235, 370, 430, 470, 545, 1090, 1591, 1739, 2021, 3182, 3478, 4033, 4042, 4687, 5123, 7955, 8066, 8695, 9374, 10105, 10246, 15910, 17390, 20165, 20210, 23435, 25615, 40330, 46870, 51230, 74777, 149554, 173419, 189551, 220289, 346838, 373885, 379102, 440578, 747770, 867095, 947755, 1101445, 1734190, 1895510, 2202890, 8150693, 16301386, 40753465, 81506930]

約数ペア:

[(1, 81506930), (2, 40753465), (5, 16301386), (10, 8150693), (37, 2202890), (43, 1895510), (47, 1734190), (74, 1101445), (86, 947755), (94, 867095), (109, 747770), (185, 440578), (215, 379102), (218, 373885), (235, 346838), (370, 220289), (430, 189551), (470, 173419), (545, 149554), (1090, 74777), (1591, 51230), (1739, 46870), (2021, 40330), (3182, 25615), (3478, 23435), (4033, 20210), (4042, 20165), (4687, 17390), (5123, 15910), (7955, 10246), (8066, 10105), (8695, 9374)]