81812290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1$

素因数の和:619

約数の個数: 64

約数和(自身を含む): 178848000

約数和(自身を除く): 97035710

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 137, 190, 266, 274, 449, 665, 685, 898, 959, 1330, 1370, 1918, 2245, 2603, 3143, 4490, 4795, 5206, 6286, 8531, 9590, 13015, 15715, 17062, 18221, 26030, 31430, 36442, 42655, 59717, 61513, 85310, 91105, 119434, 123026, 182210, 298585, 307565, 430591, 597170, 615130, 861182, 1168747, 2152955, 2337494, 4305910, 5843735, 8181229, 11687470, 16362458, 40906145, 81812290]

約数ペア:

[(1, 81812290), (2, 40906145), (5, 16362458), (7, 11687470), (10, 8181229), (14, 5843735), (19, 4305910), (35, 2337494), (38, 2152955), (70, 1168747), (95, 861182), (133, 615130), (137, 597170), (190, 430591), (266, 307565), (274, 298585), (449, 182210), (665, 123026), (685, 119434), (898, 91105), (959, 85310), (1330, 61513), (1370, 59717), (1918, 42655), (2245, 36442), (2603, 31430), (3143, 26030), (4490, 18221), (4795, 17062), (5206, 15715), (6286, 13015), (8531, 9590)]