21775900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 50743280

約数和(自身を除く): 28967380

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 73, 76, 95, 100, 146, 157, 190, 292, 314, 365, 380, 475, 628, 730, 785, 950, 1387, 1460, 1570, 1825, 1900, 2774, 2983, 3140, 3650, 3925, 5548, 5966, 6935, 7300, 7850, 11461, 11932, 13870, 14915, 15700, 22922, 27740, 29830, 34675, 45844, 57305, 59660, 69350, 74575, 114610, 138700, 149150, 217759, 229220, 286525, 298300, 435518, 573050, 871036, 1088795, 1146100, 2177590, 4355180, 5443975, 10887950, 21775900]

約数ペア:

[(1, 21775900), (2, 10887950), (4, 5443975), (5, 4355180), (10, 2177590), (19, 1146100), (20, 1088795), (25, 871036), (38, 573050), (50, 435518), (73, 298300), (76, 286525), (95, 229220), (100, 217759), (146, 149150), (157, 138700), (190, 114610), (292, 74575), (314, 69350), (365, 59660), (380, 57305), (475, 45844), (628, 34675), (730, 29830), (785, 27740), (950, 22922), (1387, 15700), (1460, 14915), (1570, 13870), (1825, 11932), (1900, 11461), (2774, 7850), (2983, 7300), (3140, 6935), (3650, 5966), (3925, 5548)]