20695180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4951}}^1$

素因数の和:4990

約数の個数: 48

約数和(自身を含む): 49916160

約数和(自身を除く): 29220980

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 380, 418, 836, 1045, 2090, 4180, 4951, 9902, 19804, 24755, 49510, 54461, 94069, 99020, 108922, 188138, 217844, 272305, 376276, 470345, 544610, 940690, 1034759, 1089220, 1881380, 2069518, 4139036, 5173795, 10347590, 20695180]

約数ペア:

[(1, 20695180), (2, 10347590), (4, 5173795), (5, 4139036), (10, 2069518), (11, 1881380), (19, 1089220), (20, 1034759), (22, 940690), (38, 544610), (44, 470345), (55, 376276), (76, 272305), (95, 217844), (110, 188138), (190, 108922), (209, 99020), (220, 94069), (380, 54461), (418, 49510), (836, 24755), (1045, 19804), (2090, 9902), (4180, 4951)]