21437584

素因数分解:

$2^4\times 7^1\times {\mathrm{277}}^1\times {\mathrm{691}}^1$

素因数の和:983

約数の個数: 40

約数和(自身を含む): 47709248

約数和(自身を除く): 26271664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 277, 554, 691, 1108, 1382, 1939, 2216, 2764, 3878, 4432, 4837, 5528, 7756, 9674, 11056, 15512, 19348, 31024, 38696, 77392, 191407, 382814, 765628, 1339849, 1531256, 2679698, 3062512, 5359396, 10718792, 21437584]

約数ペア:

[(1, 21437584), (2, 10718792), (4, 5359396), (7, 3062512), (8, 2679698), (14, 1531256), (16, 1339849), (28, 765628), (56, 382814), (112, 191407), (277, 77392), (554, 38696), (691, 31024), (1108, 19348), (1382, 15512), (1939, 11056), (2216, 9674), (2764, 7756), (3878, 5528), (4432, 4837)]