21085414

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:400

約数の個数: 32

約数和(自身を含む): 37267776

約数和(自身を除く): 16182362

約数列:

[1, 2, 7, 14, 53, 106, 157, 181, 314, 362, 371, 742, 1099, 1267, 2198, 2534, 8321, 9593, 16642, 19186, 28417, 56834, 58247, 67151, 116494, 134302, 198919, 397838, 1506101, 3012202, 10542707, 21085414]

約数ペア:

[(1, 21085414), (2, 10542707), (7, 3012202), (14, 1506101), (53, 397838), (106, 198919), (157, 134302), (181, 116494), (314, 67151), (362, 58247), (371, 56834), (742, 28417), (1099, 19186), (1267, 16642), (2198, 9593), (2534, 8321)]