20378416

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1187}}^1$

素因数の和:1261

約数の個数: 40

約数和(自身を含む): 41983920

約数和(自身を除く): 21605504

約数列:

[1, 2, 4, 8, 16, 29, 37, 58, 74, 116, 148, 232, 296, 464, 592, 1073, 1187, 2146, 2374, 4292, 4748, 8584, 9496, 17168, 18992, 34423, 43919, 68846, 87838, 137692, 175676, 275384, 351352, 550768, 702704, 1273651, 2547302, 5094604, 10189208, 20378416]

約数ペア:

[(1, 20378416), (2, 10189208), (4, 5094604), (8, 2547302), (16, 1273651), (29, 702704), (37, 550768), (58, 351352), (74, 275384), (116, 175676), (148, 137692), (232, 87838), (296, 68846), (464, 43919), (592, 34423), (1073, 18992), (1187, 17168), (2146, 9496), (2374, 8584), (4292, 4748)]