18321820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{67}}^1\times {\mathrm{113}}^1$

素因数の和:211

約数の個数: 72

約数和(自身を含む): 43302672

約数和(自身を除く): 24980852

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 113, 121, 134, 220, 226, 242, 268, 335, 452, 484, 565, 605, 670, 737, 1130, 1210, 1243, 1340, 1474, 2260, 2420, 2486, 2948, 3685, 4972, 6215, 7370, 7571, 8107, 12430, 13673, 14740, 15142, 16214, 24860, 27346, 30284, 32428, 37855, 40535, 54692, 68365, 75710, 81070, 83281, 136730, 151420, 162140, 166562, 273460, 333124, 416405, 832810, 916091, 1665620, 1832182, 3664364, 4580455, 9160910, 18321820]

約数ペア:

[(1, 18321820), (2, 9160910), (4, 4580455), (5, 3664364), (10, 1832182), (11, 1665620), (20, 916091), (22, 832810), (44, 416405), (55, 333124), (67, 273460), (110, 166562), (113, 162140), (121, 151420), (134, 136730), (220, 83281), (226, 81070), (242, 75710), (268, 68365), (335, 54692), (452, 40535), (484, 37855), (565, 32428), (605, 30284), (670, 27346), (737, 24860), (1130, 16214), (1210, 15142), (1243, 14740), (1340, 13673), (1474, 12430), (2260, 8107), (2420, 7571), (2486, 7370), (2948, 6215), (3685, 4972)]