21726760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{67}}^2$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 54547290

約数和(自身を除く): 32820530

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 67, 88, 110, 121, 134, 220, 242, 268, 335, 440, 484, 536, 605, 670, 737, 968, 1210, 1340, 1474, 2420, 2680, 2948, 3685, 4489, 4840, 5896, 7370, 8107, 8978, 14740, 16214, 17956, 22445, 29480, 32428, 35912, 40535, 44890, 49379, 64856, 81070, 89780, 98758, 162140, 179560, 197516, 246895, 324280, 395032, 493790, 543169, 987580, 1086338, 1975160, 2172676, 2715845, 4345352, 5431690, 10863380, 21726760]

約数ペア:

[(1, 21726760), (2, 10863380), (4, 5431690), (5, 4345352), (8, 2715845), (10, 2172676), (11, 1975160), (20, 1086338), (22, 987580), (40, 543169), (44, 493790), (55, 395032), (67, 324280), (88, 246895), (110, 197516), (121, 179560), (134, 162140), (220, 98758), (242, 89780), (268, 81070), (335, 64856), (440, 49379), (484, 44890), (536, 40535), (605, 35912), (670, 32428), (737, 29480), (968, 22445), (1210, 17956), (1340, 16214), (1474, 14740), (2420, 8978), (2680, 8107), (2948, 7370), (3685, 5896), (4489, 4840)]