77880680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{347}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 182407680

約数和(自身を除く): 104527000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 181, 248, 310, 347, 362, 620, 694, 724, 905, 1240, 1388, 1448, 1735, 1810, 2776, 3470, 3620, 5611, 6940, 7240, 10757, 11222, 13880, 21514, 22444, 28055, 43028, 44888, 53785, 56110, 62807, 86056, 107570, 112220, 125614, 215140, 224440, 251228, 314035, 430280, 502456, 628070, 1256140, 1947017, 2512280, 3894034, 7788068, 9735085, 15576136, 19470170, 38940340, 77880680]

約数ペア:

[(1, 77880680), (2, 38940340), (4, 19470170), (5, 15576136), (8, 9735085), (10, 7788068), (20, 3894034), (31, 2512280), (40, 1947017), (62, 1256140), (124, 628070), (155, 502456), (181, 430280), (248, 314035), (310, 251228), (347, 224440), (362, 215140), (620, 125614), (694, 112220), (724, 107570), (905, 86056), (1240, 62807), (1388, 56110), (1448, 53785), (1735, 44888), (1810, 43028), (2776, 28055), (3470, 22444), (3620, 21514), (5611, 13880), (6940, 11222), (7240, 10757)]