21977440

素因数分解:

$2^5\times 5^1\times {\mathrm{137359}}^1$

素因数の和:137374

約数の個数: 24

約数和(自身を含む): 51922080

約数和(自身を除く): 29944640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 137359, 274718, 549436, 686795, 1098872, 1373590, 2197744, 2747180, 4395488, 5494360, 10988720, 21977440]

約数ペア:

[(1, 21977440), (2, 10988720), (4, 5494360), (5, 4395488), (8, 2747180), (10, 2197744), (16, 1373590), (20, 1098872), (32, 686795), (40, 549436), (80, 274718), (160, 137359)]