21956004

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{577}}^1$

素因数の和:745

約数の個数: 72

約数和(自身を含む): 63959168

約数和(自身を除く): 42003164

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 151, 252, 302, 453, 577, 604, 906, 1057, 1154, 1359, 1731, 1812, 2114, 2308, 2718, 3171, 3462, 4039, 4228, 5193, 5436, 6342, 6924, 8078, 9513, 10386, 12117, 12684, 16156, 19026, 20772, 24234, 36351, 38052, 48468, 72702, 87127, 145404, 174254, 261381, 348508, 522762, 609889, 784143, 1045524, 1219778, 1568286, 1829667, 2439556, 3136572, 3659334, 5489001, 7318668, 10978002, 21956004]

約数ペア:

[(1, 21956004), (2, 10978002), (3, 7318668), (4, 5489001), (6, 3659334), (7, 3136572), (9, 2439556), (12, 1829667), (14, 1568286), (18, 1219778), (21, 1045524), (28, 784143), (36, 609889), (42, 522762), (63, 348508), (84, 261381), (126, 174254), (151, 145404), (252, 87127), (302, 72702), (453, 48468), (577, 38052), (604, 36351), (906, 24234), (1057, 20772), (1154, 19026), (1359, 16156), (1731, 12684), (1812, 12117), (2114, 10386), (2308, 9513), (2718, 8078), (3171, 6924), (3462, 6342), (4039, 5436), (4228, 5193)]