21690736

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8317}}^1$

素因数の和:8488

約数の個数: 20

約数和(自身を含む): 42288712

約数和(自身を除く): 20597976

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8317, 16634, 33268, 66536, 133072, 1355671, 2711342, 5422684, 10845368, 21690736]

約数ペア:

[(1, 21690736), (2, 10845368), (4, 5422684), (8, 2711342), (16, 1355671), (163, 133072), (326, 66536), (652, 33268), (1304, 16634), (2608, 8317)]