19874008

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^2\times {\mathrm{419}}^1$

素因数の和:461

約数の個数: 72

約数和(自身を含む): 47760300

約数和(自身を除く): 27886292

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 121, 154, 196, 242, 308, 392, 419, 484, 539, 616, 838, 847, 968, 1078, 1676, 1694, 2156, 2933, 3352, 3388, 4312, 4609, 5866, 5929, 6776, 9218, 11732, 11858, 18436, 20531, 23464, 23716, 32263, 36872, 41062, 47432, 50699, 64526, 82124, 101398, 129052, 164248, 202796, 225841, 258104, 354893, 405592, 451682, 709786, 903364, 1419572, 1806728, 2484251, 2839144, 4968502, 9937004, 19874008]

約数ペア:

[(1, 19874008), (2, 9937004), (4, 4968502), (7, 2839144), (8, 2484251), (11, 1806728), (14, 1419572), (22, 903364), (28, 709786), (44, 451682), (49, 405592), (56, 354893), (77, 258104), (88, 225841), (98, 202796), (121, 164248), (154, 129052), (196, 101398), (242, 82124), (308, 64526), (392, 50699), (419, 47432), (484, 41062), (539, 36872), (616, 32263), (838, 23716), (847, 23464), (968, 20531), (1078, 18436), (1676, 11858), (1694, 11732), (2156, 9218), (2933, 6776), (3352, 5929), (3388, 5866), (4312, 4609)]