2021189660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{203339}}^1$

素因数の和:203426

約数の個数: 48

約数和(自身を含む): 4919201280

約数和(自身を除く): 2898011620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 203339, 406678, 813356, 1016695, 1423373, 2033390, 2846746, 4066780, 5693492, 7116865, 14233730, 14437069, 28467460, 28874138, 57748276, 72185345, 101059483, 144370690, 202118966, 288741380, 404237932, 505297415, 1010594830, 2021189660]

約数ペア:

[(1, 2021189660), (2, 1010594830), (4, 505297415), (5, 404237932), (7, 288741380), (10, 202118966), (14, 144370690), (20, 101059483), (28, 72185345), (35, 57748276), (70, 28874138), (71, 28467460), (140, 14437069), (142, 14233730), (284, 7116865), (355, 5693492), (497, 4066780), (710, 2846746), (994, 2033390), (1420, 1423373), (1988, 1016695), (2485, 813356), (4970, 406678), (9940, 203339)]