21608510

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:262

約数の個数: 96

約数和(自身を含む): 52202880

約数和(自身を除く): 30594370

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 35, 38, 49, 55, 70, 77, 95, 98, 110, 133, 154, 190, 209, 211, 245, 266, 385, 418, 422, 490, 539, 665, 770, 931, 1045, 1055, 1078, 1330, 1463, 1477, 1862, 2090, 2110, 2321, 2695, 2926, 2954, 4009, 4642, 4655, 5390, 7315, 7385, 8018, 9310, 10241, 10339, 11605, 14630, 14770, 16247, 20045, 20482, 20678, 23210, 28063, 32494, 40090, 44099, 51205, 51695, 56126, 81235, 88198, 102410, 103390, 113729, 140315, 162470, 196441, 220495, 227458, 280630, 308693, 392882, 440990, 568645, 617386, 982205, 1137290, 1543465, 1964410, 2160851, 3086930, 4321702, 10804255, 21608510]

約数ペア:

[(1, 21608510), (2, 10804255), (5, 4321702), (7, 3086930), (10, 2160851), (11, 1964410), (14, 1543465), (19, 1137290), (22, 982205), (35, 617386), (38, 568645), (49, 440990), (55, 392882), (70, 308693), (77, 280630), (95, 227458), (98, 220495), (110, 196441), (133, 162470), (154, 140315), (190, 113729), (209, 103390), (211, 102410), (245, 88198), (266, 81235), (385, 56126), (418, 51695), (422, 51205), (490, 44099), (539, 40090), (665, 32494), (770, 28063), (931, 23210), (1045, 20678), (1055, 20482), (1078, 20045), (1330, 16247), (1463, 14770), (1477, 14630), (1862, 11605), (2090, 10339), (2110, 10241), (2321, 9310), (2695, 8018), (2926, 7385), (2954, 7315), (4009, 5390), (4642, 4655)]