27778790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 56996352

約数和(自身を除く): 29217562

約数列:

[1, 2, 5, 10, 13, 26, 31, 61, 62, 65, 113, 122, 130, 155, 226, 305, 310, 403, 565, 610, 793, 806, 1130, 1469, 1586, 1891, 2015, 2938, 3503, 3782, 3965, 4030, 6893, 7006, 7345, 7930, 9455, 13786, 14690, 17515, 18910, 24583, 34465, 35030, 45539, 49166, 68930, 89609, 91078, 122915, 179218, 213683, 227695, 245830, 427366, 448045, 455390, 896090, 1068415, 2136830, 2777879, 5555758, 13889395, 27778790]

約数ペア:

[(1, 27778790), (2, 13889395), (5, 5555758), (10, 2777879), (13, 2136830), (26, 1068415), (31, 896090), (61, 455390), (62, 448045), (65, 427366), (113, 245830), (122, 227695), (130, 213683), (155, 179218), (226, 122915), (305, 91078), (310, 89609), (403, 68930), (565, 49166), (610, 45539), (793, 35030), (806, 34465), (1130, 24583), (1469, 18910), (1586, 17515), (1891, 14690), (2015, 13786), (2938, 9455), (3503, 7930), (3782, 7345), (3965, 7006), (4030, 6893)]