21890150

素因数分解:

$2^1\times 5^2\times {\mathrm{641}}^1\times {\mathrm{683}}^1$

素因数の和:1336

約数の個数: 24

約数和(自身を含む): 40838904

約数和(自身を除く): 18948754

約数列:

[1, 2, 5, 10, 25, 50, 641, 683, 1282, 1366, 3205, 3415, 6410, 6830, 16025, 17075, 32050, 34150, 437803, 875606, 2189015, 4378030, 10945075, 21890150]

約数ペア:

[(1, 21890150), (2, 10945075), (5, 4378030), (10, 2189015), (25, 875606), (50, 437803), (641, 34150), (683, 32050), (1282, 17075), (1366, 16025), (3205, 6830), (3415, 6410)]