31018910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:273

約数の個数: 64

約数和(自身を含む): 63866880

約数和(自身を除く): 32847970

約数列:

[1, 2, 5, 10, 13, 26, 31, 43, 62, 65, 86, 130, 155, 179, 215, 310, 358, 403, 430, 559, 806, 895, 1118, 1333, 1790, 2015, 2327, 2666, 2795, 4030, 4654, 5549, 5590, 6665, 7697, 11098, 11635, 13330, 15394, 17329, 23270, 27745, 34658, 38485, 55490, 72137, 76970, 86645, 100061, 144274, 173290, 200122, 238607, 360685, 477214, 500305, 721370, 1000610, 1193035, 2386070, 3101891, 6203782, 15509455, 31018910]

約数ペア:

[(1, 31018910), (2, 15509455), (5, 6203782), (10, 3101891), (13, 2386070), (26, 1193035), (31, 1000610), (43, 721370), (62, 500305), (65, 477214), (86, 360685), (130, 238607), (155, 200122), (179, 173290), (215, 144274), (310, 100061), (358, 86645), (403, 76970), (430, 72137), (559, 55490), (806, 38485), (895, 34658), (1118, 27745), (1333, 23270), (1790, 17329), (2015, 15394), (2327, 13330), (2666, 11635), (2795, 11098), (4030, 7697), (4654, 6665), (5549, 5590)]