20881938

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{587}}^1$

素因数の和:628

約数の個数: 72

約数和(自身を含む): 53491536

約数和(自身を除く): 32609598

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 49, 66, 77, 98, 121, 147, 154, 231, 242, 294, 363, 462, 539, 587, 726, 847, 1078, 1174, 1617, 1694, 1761, 2541, 3234, 3522, 4109, 5082, 5929, 6457, 8218, 11858, 12327, 12914, 17787, 19371, 24654, 28763, 35574, 38742, 45199, 57526, 71027, 86289, 90398, 135597, 142054, 172578, 213081, 271194, 316393, 426162, 497189, 632786, 949179, 994378, 1491567, 1898358, 2983134, 3480323, 6960646, 10440969, 20881938]

約数ペア:

[(1, 20881938), (2, 10440969), (3, 6960646), (6, 3480323), (7, 2983134), (11, 1898358), (14, 1491567), (21, 994378), (22, 949179), (33, 632786), (42, 497189), (49, 426162), (66, 316393), (77, 271194), (98, 213081), (121, 172578), (147, 142054), (154, 135597), (231, 90398), (242, 86289), (294, 71027), (363, 57526), (462, 45199), (539, 38742), (587, 35574), (726, 28763), (847, 24654), (1078, 19371), (1174, 17787), (1617, 12914), (1694, 12327), (1761, 11858), (2541, 8218), (3234, 6457), (3522, 5929), (4109, 5082)]