21363620

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 24903580

約数列:

[1, 2, 4, 5, 10, 20, 67, 107, 134, 149, 214, 268, 298, 335, 428, 535, 596, 670, 745, 1070, 1340, 1490, 2140, 2980, 7169, 9983, 14338, 15943, 19966, 28676, 31886, 35845, 39932, 49915, 63772, 71690, 79715, 99830, 143380, 159430, 199660, 318860, 1068181, 2136362, 4272724, 5340905, 10681810, 21363620]

約数ペア:

[(1, 21363620), (2, 10681810), (4, 5340905), (5, 4272724), (10, 2136362), (20, 1068181), (67, 318860), (107, 199660), (134, 159430), (149, 143380), (214, 99830), (268, 79715), (298, 71690), (335, 63772), (428, 49915), (535, 39932), (596, 35845), (670, 31886), (745, 28676), (1070, 19966), (1340, 15943), (1490, 14338), (2140, 9983), (2980, 7169)]