21629320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17443}}^1$

素因数の和:17485

約数の個数: 32

約数和(自身を含む): 50238720

約数和(自身を除く): 28609400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17443, 34886, 69772, 87215, 139544, 174430, 348860, 540733, 697720, 1081466, 2162932, 2703665, 4325864, 5407330, 10814660, 21629320]

約数ペア:

[(1, 21629320), (2, 10814660), (4, 5407330), (5, 4325864), (8, 2703665), (10, 2162932), (20, 1081466), (31, 697720), (40, 540733), (62, 348860), (124, 174430), (155, 139544), (248, 87215), (310, 69772), (620, 34886), (1240, 17443)]