18118720

素因数分解:

$2^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1381}}^1$

素因数の和:1439

約数の個数: 56

約数和(自身を含む): 44229528

約数和(自身を除く): 26110808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 160, 164, 205, 320, 328, 410, 656, 820, 1312, 1381, 1640, 2624, 2762, 3280, 5524, 6560, 6905, 11048, 13120, 13810, 22096, 27620, 44192, 55240, 56621, 88384, 110480, 113242, 220960, 226484, 283105, 441920, 452968, 566210, 905936, 1132420, 1811872, 2264840, 3623744, 4529680, 9059360, 18118720]

約数ペア:

[(1, 18118720), (2, 9059360), (4, 4529680), (5, 3623744), (8, 2264840), (10, 1811872), (16, 1132420), (20, 905936), (32, 566210), (40, 452968), (41, 441920), (64, 283105), (80, 226484), (82, 220960), (160, 113242), (164, 110480), (205, 88384), (320, 56621), (328, 55240), (410, 44192), (656, 27620), (820, 22096), (1312, 13810), (1381, 13120), (1640, 11048), (2624, 6905), (2762, 6560), (3280, 5524)]