21220160

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5101}}^1$

素因数の和:5131

約数の個数: 56

約数和(自身を含む): 54428136

約数和(自身を除く): 33207976

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 5101, 10202, 20404, 25505, 40808, 51010, 66313, 81616, 102020, 132626, 163232, 204040, 265252, 326464, 331565, 408080, 530504, 663130, 816160, 1061008, 1326260, 1632320, 2122016, 2652520, 4244032, 5305040, 10610080, 21220160]

約数ペア:

[(1, 21220160), (2, 10610080), (4, 5305040), (5, 4244032), (8, 2652520), (10, 2122016), (13, 1632320), (16, 1326260), (20, 1061008), (26, 816160), (32, 663130), (40, 530504), (52, 408080), (64, 331565), (65, 326464), (80, 265252), (104, 204040), (130, 163232), (160, 132626), (208, 102020), (260, 81616), (320, 66313), (416, 51010), (520, 40808), (832, 25505), (1040, 20404), (2080, 10202), (4160, 5101)]