617890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:131

約数の個数: 48

約数和(自身を含む): 1407672

約数和(自身を除く): 789782

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 97, 98, 130, 182, 194, 245, 455, 485, 490, 637, 679, 910, 970, 1261, 1274, 1358, 2522, 3185, 3395, 4753, 6305, 6370, 6790, 8827, 9506, 12610, 17654, 23765, 44135, 47530, 61789, 88270, 123578, 308945, 617890]

約数ペア:

[(1, 617890), (2, 308945), (5, 123578), (7, 88270), (10, 61789), (13, 47530), (14, 44135), (26, 23765), (35, 17654), (49, 12610), (65, 9506), (70, 8827), (91, 6790), (97, 6370), (98, 6305), (130, 4753), (182, 3395), (194, 3185), (245, 2522), (455, 1358), (485, 1274), (490, 1261), (637, 970), (679, 910)]