30400780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 65802240

約数和(自身を除く): 35401460

約数列:

[1, 2, 4, 5, 10, 20, 71, 79, 142, 158, 271, 284, 316, 355, 395, 542, 710, 790, 1084, 1355, 1420, 1580, 2710, 5420, 5609, 11218, 19241, 21409, 22436, 28045, 38482, 42818, 56090, 76964, 85636, 96205, 107045, 112180, 192410, 214090, 384820, 428180, 1520039, 3040078, 6080156, 7600195, 15200390, 30400780]

約数ペア:

[(1, 30400780), (2, 15200390), (4, 7600195), (5, 6080156), (10, 3040078), (20, 1520039), (71, 428180), (79, 384820), (142, 214090), (158, 192410), (271, 112180), (284, 107045), (316, 96205), (355, 85636), (395, 76964), (542, 56090), (710, 42818), (790, 38482), (1084, 28045), (1355, 22436), (1420, 21409), (1580, 19241), (2710, 11218), (5420, 5609)]