21056420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^3\times {\mathrm{113}}^1$

素因数の和:162

約数の個数: 96

約数和(自身を含む): 56077056

約数和(自身を除く): 35020636

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 113, 121, 140, 154, 220, 226, 242, 308, 385, 452, 484, 565, 605, 770, 791, 847, 1130, 1210, 1243, 1331, 1540, 1582, 1694, 2260, 2420, 2486, 2662, 3164, 3388, 3955, 4235, 4972, 5324, 6215, 6655, 7910, 8470, 8701, 9317, 12430, 13310, 13673, 15820, 16940, 17402, 18634, 24860, 26620, 27346, 34804, 37268, 43505, 46585, 54692, 68365, 87010, 93170, 95711, 136730, 150403, 174020, 186340, 191422, 273460, 300806, 382844, 478555, 601612, 752015, 957110, 1052821, 1504030, 1914220, 2105642, 3008060, 4211284, 5264105, 10528210, 21056420]

約数ペア:

[(1, 21056420), (2, 10528210), (4, 5264105), (5, 4211284), (7, 3008060), (10, 2105642), (11, 1914220), (14, 1504030), (20, 1052821), (22, 957110), (28, 752015), (35, 601612), (44, 478555), (55, 382844), (70, 300806), (77, 273460), (110, 191422), (113, 186340), (121, 174020), (140, 150403), (154, 136730), (220, 95711), (226, 93170), (242, 87010), (308, 68365), (385, 54692), (452, 46585), (484, 43505), (565, 37268), (605, 34804), (770, 27346), (791, 26620), (847, 24860), (1130, 18634), (1210, 17402), (1243, 16940), (1331, 15820), (1540, 13673), (1582, 13310), (1694, 12430), (2260, 9317), (2420, 8701), (2486, 8470), (2662, 7910), (3164, 6655), (3388, 6215), (3955, 5324), (4235, 4972)]