21879816

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:243

約数の個数: 128

約数和(自身を含む): 68014080

約数和(自身を除く): 46134264

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 17, 21, 24, 28, 34, 42, 47, 51, 56, 68, 84, 94, 102, 119, 136, 141, 163, 168, 188, 204, 238, 282, 326, 329, 357, 376, 408, 476, 489, 564, 652, 658, 714, 799, 952, 978, 987, 1128, 1141, 1304, 1316, 1428, 1598, 1956, 1974, 2282, 2397, 2632, 2771, 2856, 3196, 3423, 3912, 3948, 4564, 4794, 5542, 5593, 6392, 6846, 7661, 7896, 8313, 9128, 9588, 11084, 11186, 13692, 15322, 16626, 16779, 19176, 19397, 22168, 22372, 22983, 27384, 30644, 33252, 33558, 38794, 44744, 45966, 53627, 58191, 61288, 66504, 67116, 77588, 91932, 107254, 116382, 130237, 134232, 155176, 160881, 183864, 214508, 232764, 260474, 321762, 390711, 429016, 465528, 520948, 643524, 781422, 911659, 1041896, 1287048, 1562844, 1823318, 2734977, 3125688, 3646636, 5469954, 7293272, 10939908, 21879816]

約数ペア:

[(1, 21879816), (2, 10939908), (3, 7293272), (4, 5469954), (6, 3646636), (7, 3125688), (8, 2734977), (12, 1823318), (14, 1562844), (17, 1287048), (21, 1041896), (24, 911659), (28, 781422), (34, 643524), (42, 520948), (47, 465528), (51, 429016), (56, 390711), (68, 321762), (84, 260474), (94, 232764), (102, 214508), (119, 183864), (136, 160881), (141, 155176), (163, 134232), (168, 130237), (188, 116382), (204, 107254), (238, 91932), (282, 77588), (326, 67116), (329, 66504), (357, 61288), (376, 58191), (408, 53627), (476, 45966), (489, 44744), (564, 38794), (652, 33558), (658, 33252), (714, 30644), (799, 27384), (952, 22983), (978, 22372), (987, 22168), (1128, 19397), (1141, 19176), (1304, 16779), (1316, 16626), (1428, 15322), (1598, 13692), (1956, 11186), (1974, 11084), (2282, 9588), (2397, 9128), (2632, 8313), (2771, 7896), (2856, 7661), (3196, 6846), (3423, 6392), (3912, 5593), (3948, 5542), (4564, 4794)]