21912490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{821}}^1$

素因数の和:1002

約数の個数: 32

約数和(自身を含む): 42079824

約数和(自身を除く): 20167334

約数列:

[1, 2, 5, 10, 17, 34, 85, 157, 170, 314, 785, 821, 1570, 1642, 2669, 4105, 5338, 8210, 13345, 13957, 26690, 27914, 69785, 128897, 139570, 257794, 644485, 1288970, 2191249, 4382498, 10956245, 21912490]

約数ペア:

[(1, 21912490), (2, 10956245), (5, 4382498), (10, 2191249), (17, 1288970), (34, 644485), (85, 257794), (157, 139570), (170, 128897), (314, 69785), (785, 27914), (821, 26690), (1570, 13957), (1642, 13345), (2669, 8210), (4105, 5338)]