656702720

素因数分解:

$2^8\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3691}}^1$

素因数の和:3851

約数の個数: 72

約数和(自身を含む): 1584754080

約数和(自身を除く): 928051360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 256, 278, 320, 556, 640, 695, 1112, 1280, 1390, 2224, 2780, 3691, 4448, 5560, 7382, 8896, 11120, 14764, 17792, 18455, 22240, 29528, 35584, 36910, 44480, 59056, 73820, 88960, 118112, 147640, 177920, 236224, 295280, 472448, 513049, 590560, 944896, 1026098, 1181120, 2052196, 2362240, 2565245, 4104392, 4724480, 5130490, 8208784, 10260980, 16417568, 20521960, 32835136, 41043920, 65670272, 82087840, 131340544, 164175680, 328351360, 656702720]

約数ペア:

[(1, 656702720), (2, 328351360), (4, 164175680), (5, 131340544), (8, 82087840), (10, 65670272), (16, 41043920), (20, 32835136), (32, 20521960), (40, 16417568), (64, 10260980), (80, 8208784), (128, 5130490), (139, 4724480), (160, 4104392), (256, 2565245), (278, 2362240), (320, 2052196), (556, 1181120), (640, 1026098), (695, 944896), (1112, 590560), (1280, 513049), (1390, 472448), (2224, 295280), (2780, 236224), (3691, 177920), (4448, 147640), (5560, 118112), (7382, 88960), (8896, 73820), (11120, 59056), (14764, 44480), (17792, 36910), (18455, 35584), (22240, 29528)]