81394940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{883}}^1$

素因数の和:1322

約数の個数: 48

約数和(自身を含む): 187125120

約数和(自身を除く): 105730180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 419, 838, 883, 1676, 1766, 2095, 3532, 4190, 4415, 4609, 8380, 8830, 9218, 9713, 17660, 18436, 19426, 23045, 38852, 46090, 48565, 92180, 97130, 194260, 369977, 739954, 1479908, 1849885, 3699770, 4069747, 7399540, 8139494, 16278988, 20348735, 40697470, 81394940]

約数ペア:

[(1, 81394940), (2, 40697470), (4, 20348735), (5, 16278988), (10, 8139494), (11, 7399540), (20, 4069747), (22, 3699770), (44, 1849885), (55, 1479908), (110, 739954), (220, 369977), (419, 194260), (838, 97130), (883, 92180), (1676, 48565), (1766, 46090), (2095, 38852), (3532, 23045), (4190, 19426), (4415, 18436), (4609, 17660), (8380, 9713), (8830, 9218)]