20176811720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{491159}}^1$

素因数の和:491262

約数の個数: 64

約数和(自身を含む): 49508928000

約数和(自身を除く): 29332116280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 520, 632, 790, 1027, 1580, 2054, 3160, 4108, 5135, 8216, 10270, 20540, 41080, 491159, 982318, 1964636, 2455795, 3929272, 4911590, 6385067, 9823180, 12770134, 19646360, 25540268, 31925335, 38801561, 51080536, 63850670, 77603122, 127701340, 155206244, 194007805, 255402680, 310412488, 388015610, 504420293, 776031220, 1008840586, 1552062440, 2017681172, 2522101465, 4035362344, 5044202930, 10088405860, 20176811720]

約数ペア:

[(1, 20176811720), (2, 10088405860), (4, 5044202930), (5, 4035362344), (8, 2522101465), (10, 2017681172), (13, 1552062440), (20, 1008840586), (26, 776031220), (40, 504420293), (52, 388015610), (65, 310412488), (79, 255402680), (104, 194007805), (130, 155206244), (158, 127701340), (260, 77603122), (316, 63850670), (395, 51080536), (520, 38801561), (632, 31925335), (790, 25540268), (1027, 19646360), (1580, 12770134), (2054, 9823180), (3160, 6385067), (4108, 4911590), (5135, 3929272), (8216, 2455795), (10270, 1964636), (20540, 982318), (41080, 491159)]