21492640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10333}}^1$

素因数の和:10361

約数の個数: 48

約数和(自身を含む): 54687528

約数和(自身を除く): 33194888

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10333, 20666, 41332, 51665, 82664, 103330, 134329, 165328, 206660, 268658, 330656, 413320, 537316, 671645, 826640, 1074632, 1343290, 1653280, 2149264, 2686580, 4298528, 5373160, 10746320, 21492640]

約数ペア:

[(1, 21492640), (2, 10746320), (4, 5373160), (5, 4298528), (8, 2686580), (10, 2149264), (13, 1653280), (16, 1343290), (20, 1074632), (26, 826640), (32, 671645), (40, 537316), (52, 413320), (65, 330656), (80, 268658), (104, 206660), (130, 165328), (160, 134329), (208, 103330), (260, 82664), (416, 51665), (520, 41332), (1040, 20666), (2080, 10333)]