123310280

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 285450480

約数和(自身を除く): 162140200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 97, 122, 194, 244, 305, 388, 485, 488, 521, 610, 776, 970, 1042, 1220, 1940, 2084, 2440, 2605, 3880, 4168, 5210, 5917, 10420, 11834, 20840, 23668, 29585, 31781, 47336, 50537, 59170, 63562, 101074, 118340, 127124, 158905, 202148, 236680, 252685, 254248, 317810, 404296, 505370, 635620, 1010740, 1271240, 2021480, 3082757, 6165514, 12331028, 15413785, 24662056, 30827570, 61655140, 123310280]

約数ペア:

[(1, 123310280), (2, 61655140), (4, 30827570), (5, 24662056), (8, 15413785), (10, 12331028), (20, 6165514), (40, 3082757), (61, 2021480), (97, 1271240), (122, 1010740), (194, 635620), (244, 505370), (305, 404296), (388, 317810), (485, 254248), (488, 252685), (521, 236680), (610, 202148), (776, 158905), (970, 127124), (1042, 118340), (1220, 101074), (1940, 63562), (2084, 59170), (2440, 50537), (2605, 47336), (3880, 31781), (4168, 29585), (5210, 23668), (5917, 20840), (10420, 11834)]