20857589180

素因数分解:

$2^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1\times {\mathrm{65413}}^1$

素因数の和:65678

約数の個数: 48

約数和(自身を含む): 44507685600

約数和(自身を除く): 23650096420

約数列:

[1, 2, 4, 5, 10, 20, 107, 149, 214, 298, 428, 535, 596, 745, 1070, 1490, 2140, 2980, 15943, 31886, 63772, 65413, 79715, 130826, 159430, 261652, 318860, 327065, 654130, 1308260, 6999191, 9746537, 13998382, 19493074, 27996764, 34995955, 38986148, 48732685, 69991910, 97465370, 139983820, 194930740, 1042879459, 2085758918, 4171517836, 5214397295, 10428794590, 20857589180]

約数ペア:

[(1, 20857589180), (2, 10428794590), (4, 5214397295), (5, 4171517836), (10, 2085758918), (20, 1042879459), (107, 194930740), (149, 139983820), (214, 97465370), (298, 69991910), (428, 48732685), (535, 38986148), (596, 34995955), (745, 27996764), (1070, 19493074), (1490, 13998382), (2140, 9746537), (2980, 6999191), (15943, 1308260), (31886, 654130), (63772, 327065), (65413, 318860), (79715, 261652), (130826, 159430)]