21018664

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4177}}^1$

素因数の和:4237

約数の個数: 32

約数和(自身を含む): 42866280

約数和(自身を除く): 21847616

約数列:

[1, 2, 4, 8, 17, 34, 37, 68, 74, 136, 148, 296, 629, 1258, 2516, 4177, 5032, 8354, 16708, 33416, 71009, 142018, 154549, 284036, 309098, 568072, 618196, 1236392, 2627333, 5254666, 10509332, 21018664]

約数ペア:

[(1, 21018664), (2, 10509332), (4, 5254666), (8, 2627333), (17, 1236392), (34, 618196), (37, 568072), (68, 309098), (74, 284036), (136, 154549), (148, 142018), (296, 71009), (629, 33416), (1258, 16708), (2516, 8354), (4177, 5032)]