21270700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:403

約数の個数: 72

約数和(自身を含む): 51340464

約数和(自身を除く): 30069764

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 61, 100, 110, 122, 220, 244, 275, 305, 317, 550, 610, 634, 671, 1100, 1220, 1268, 1342, 1525, 1585, 2684, 3050, 3170, 3355, 3487, 6100, 6340, 6710, 6974, 7925, 13420, 13948, 15850, 16775, 17435, 19337, 31700, 33550, 34870, 38674, 67100, 69740, 77348, 87175, 96685, 174350, 193370, 212707, 348700, 386740, 425414, 483425, 850828, 966850, 1063535, 1933700, 2127070, 4254140, 5317675, 10635350, 21270700]

約数ペア:

[(1, 21270700), (2, 10635350), (4, 5317675), (5, 4254140), (10, 2127070), (11, 1933700), (20, 1063535), (22, 966850), (25, 850828), (44, 483425), (50, 425414), (55, 386740), (61, 348700), (100, 212707), (110, 193370), (122, 174350), (220, 96685), (244, 87175), (275, 77348), (305, 69740), (317, 67100), (550, 38674), (610, 34870), (634, 33550), (671, 31700), (1100, 19337), (1220, 17435), (1268, 16775), (1342, 15850), (1525, 13948), (1585, 13420), (2684, 7925), (3050, 6974), (3170, 6710), (3355, 6340), (3487, 6100)]