21120784

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{35677}}^1$

素因数の和:35722

約数の個数: 20

約数和(自身を含む): 42028684

約数和(自身を除く): 20907900

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 35677, 71354, 142708, 285416, 570832, 1320049, 2640098, 5280196, 10560392, 21120784]

約数ペア:

[(1, 21120784), (2, 10560392), (4, 5280196), (8, 2640098), (16, 1320049), (37, 570832), (74, 285416), (148, 142708), (296, 71354), (592, 35677)]