23123980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1181}}^1$

素因数の和:1290

約数の個数: 48

約数和(自身を含む): 53615520

約数和(自身を除く): 30491540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1181, 1780, 1958, 2362, 3916, 4724, 4895, 5905, 9790, 11810, 12991, 19580, 23620, 25982, 51964, 64955, 105109, 129910, 210218, 259820, 420436, 525545, 1051090, 1156199, 2102180, 2312398, 4624796, 5780995, 11561990, 23123980]

約数ペア:

[(1, 23123980), (2, 11561990), (4, 5780995), (5, 4624796), (10, 2312398), (11, 2102180), (20, 1156199), (22, 1051090), (44, 525545), (55, 420436), (89, 259820), (110, 210218), (178, 129910), (220, 105109), (356, 64955), (445, 51964), (890, 25982), (979, 23620), (1181, 19580), (1780, 12991), (1958, 11810), (2362, 9790), (3916, 5905), (4724, 4895)]