21223990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124847}}^1$

素因数の和:124871

約数の個数: 16

約数和(自身を含む): 40450752

約数和(自身を除く): 19226762

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124847, 249694, 624235, 1248470, 2122399, 4244798, 10611995, 21223990]

約数ペア:

[(1, 21223990), (2, 10611995), (5, 4244798), (10, 2122399), (17, 1248470), (34, 624235), (85, 249694), (170, 124847)]