201420560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{228887}}^1$

素因数の和:228911

約数の個数: 40

約数和(自身を含む): 510878016

約数和(自身を除く): 309457456

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 228887, 457774, 915548, 1144435, 1831096, 2288870, 2517757, 3662192, 4577740, 5035514, 9155480, 10071028, 12588785, 18310960, 20142056, 25177570, 40284112, 50355140, 100710280, 201420560]

約数ペア:

[(1, 201420560), (2, 100710280), (4, 50355140), (5, 40284112), (8, 25177570), (10, 20142056), (11, 18310960), (16, 12588785), (20, 10071028), (22, 9155480), (40, 5035514), (44, 4577740), (55, 3662192), (80, 2517757), (88, 2288870), (110, 1831096), (176, 1144435), (220, 915548), (440, 457774), (880, 228887)]