81767150

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{743}}^1$

素因数の和:857

約数の個数: 48

約数和(自身を含む): 159418368

約数和(自身を除く): 77651218

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 71, 142, 155, 310, 355, 710, 743, 775, 1486, 1550, 1775, 2201, 3550, 3715, 4402, 7430, 11005, 18575, 22010, 23033, 37150, 46066, 52753, 55025, 105506, 110050, 115165, 230330, 263765, 527530, 575825, 1151650, 1318825, 1635343, 2637650, 3270686, 8176715, 16353430, 40883575, 81767150]

約数ペア:

[(1, 81767150), (2, 40883575), (5, 16353430), (10, 8176715), (25, 3270686), (31, 2637650), (50, 1635343), (62, 1318825), (71, 1151650), (142, 575825), (155, 527530), (310, 263765), (355, 230330), (710, 115165), (743, 110050), (775, 105506), (1486, 55025), (1550, 52753), (1775, 46066), (2201, 37150), (3550, 23033), (3715, 22010), (4402, 18575), (7430, 11005)]