21758990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{359}}^1$

素因数の和:425

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 24897010

約数列:

[1, 2, 5, 10, 11, 19, 22, 29, 38, 55, 58, 95, 110, 145, 190, 209, 290, 319, 359, 418, 551, 638, 718, 1045, 1102, 1595, 1795, 2090, 2755, 3190, 3590, 3949, 5510, 6061, 6821, 7898, 10411, 12122, 13642, 19745, 20822, 30305, 34105, 39490, 52055, 60610, 68210, 75031, 104110, 114521, 150062, 197809, 229042, 375155, 395618, 572605, 750310, 989045, 1145210, 1978090, 2175899, 4351798, 10879495, 21758990]

約数ペア:

[(1, 21758990), (2, 10879495), (5, 4351798), (10, 2175899), (11, 1978090), (19, 1145210), (22, 989045), (29, 750310), (38, 572605), (55, 395618), (58, 375155), (95, 229042), (110, 197809), (145, 150062), (190, 114521), (209, 104110), (290, 75031), (319, 68210), (359, 60610), (418, 52055), (551, 39490), (638, 34105), (718, 30305), (1045, 20822), (1102, 19745), (1595, 13642), (1795, 12122), (2090, 10411), (2755, 7898), (3190, 6821), (3590, 6061), (3949, 5510)]