21446920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{617}}^1$

素因数の和:718

約数の個数: 64

約数和(自身を含む): 53395200

約数和(自身を除く): 31948280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 79, 88, 110, 158, 220, 316, 395, 440, 617, 632, 790, 869, 1234, 1580, 1738, 2468, 3085, 3160, 3476, 4345, 4936, 6170, 6787, 6952, 8690, 12340, 13574, 17380, 24680, 27148, 33935, 34760, 48743, 54296, 67870, 97486, 135740, 194972, 243715, 271480, 389944, 487430, 536173, 974860, 1072346, 1949720, 2144692, 2680865, 4289384, 5361730, 10723460, 21446920]

約数ペア:

[(1, 21446920), (2, 10723460), (4, 5361730), (5, 4289384), (8, 2680865), (10, 2144692), (11, 1949720), (20, 1072346), (22, 974860), (40, 536173), (44, 487430), (55, 389944), (79, 271480), (88, 243715), (110, 194972), (158, 135740), (220, 97486), (316, 67870), (395, 54296), (440, 48743), (617, 34760), (632, 33935), (790, 27148), (869, 24680), (1234, 17380), (1580, 13574), (1738, 12340), (2468, 8690), (3085, 6952), (3160, 6787), (3476, 6170), (4345, 4936)]