77685620

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 166320000

約数和(自身を除く): 88634380

約数列:

[1, 2, 4, 5, 10, 20, 131, 149, 199, 262, 298, 398, 524, 596, 655, 745, 796, 995, 1310, 1490, 1990, 2620, 2980, 3980, 19519, 26069, 29651, 39038, 52138, 59302, 78076, 97595, 104276, 118604, 130345, 148255, 195190, 260690, 296510, 390380, 521380, 593020, 3884281, 7768562, 15537124, 19421405, 38842810, 77685620]

約数ペア:

[(1, 77685620), (2, 38842810), (4, 19421405), (5, 15537124), (10, 7768562), (20, 3884281), (131, 593020), (149, 521380), (199, 390380), (262, 296510), (298, 260690), (398, 195190), (524, 148255), (596, 130345), (655, 118604), (745, 104276), (796, 97595), (995, 78076), (1310, 59302), (1490, 52138), (1990, 39038), (2620, 29651), (2980, 26069), (3980, 19519)]