20720144

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{4481}}^1$

素因数の和:4523

約数の個数: 30

約数和(自身を含む): 42655194

約数和(自身を除く): 21935050

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 289, 578, 1156, 2312, 4481, 4624, 8962, 17924, 35848, 71696, 76177, 152354, 304708, 609416, 1218832, 1295009, 2590018, 5180036, 10360072, 20720144]

約数ペア:

[(1, 20720144), (2, 10360072), (4, 5180036), (8, 2590018), (16, 1295009), (17, 1218832), (34, 609416), (68, 304708), (136, 152354), (272, 76177), (289, 71696), (578, 35848), (1156, 17924), (2312, 8962), (4481, 4624)]