21393010

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1039}}^1$

素因数の和:1146

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 19042190

約数列:

[1, 2, 5, 10, 29, 58, 71, 142, 145, 290, 355, 710, 1039, 2059, 2078, 4118, 5195, 10295, 10390, 20590, 30131, 60262, 73769, 147538, 150655, 301310, 368845, 737690, 2139301, 4278602, 10696505, 21393010]

約数ペア:

[(1, 21393010), (2, 10696505), (5, 4278602), (10, 2139301), (29, 737690), (58, 368845), (71, 301310), (142, 150655), (145, 147538), (290, 73769), (355, 60262), (710, 30131), (1039, 20590), (2059, 10390), (2078, 10295), (4118, 5195)]