642526180

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{431}}^1\times {\mathrm{569}}^1$

素因数の和:1140

約数の個数: 48

約数和(自身を含む): 1365154560

約数和(自身を除く): 722628380

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 431, 524, 569, 655, 862, 1138, 1310, 1724, 2155, 2276, 2620, 2845, 4310, 5690, 8620, 11380, 56461, 74539, 112922, 149078, 225844, 245239, 282305, 298156, 372695, 490478, 564610, 745390, 980956, 1129220, 1226195, 1490780, 2452390, 4904780, 32126309, 64252618, 128505236, 160631545, 321263090, 642526180]

約数ペア:

[(1, 642526180), (2, 321263090), (4, 160631545), (5, 128505236), (10, 64252618), (20, 32126309), (131, 4904780), (262, 2452390), (431, 1490780), (524, 1226195), (569, 1129220), (655, 980956), (862, 745390), (1138, 564610), (1310, 490478), (1724, 372695), (2155, 298156), (2276, 282305), (2620, 245239), (2845, 225844), (4310, 149078), (5690, 112922), (8620, 74539), (11380, 56461)]