20295080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1259}}^1$

素因数の和:1314

約数の個数: 64

約数和(自身を含む): 50803200

約数和(自身を除く): 30508120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1259, 1612, 2015, 2518, 3224, 4030, 5036, 6295, 8060, 10072, 12590, 16120, 16367, 25180, 32734, 39029, 50360, 65468, 78058, 81835, 130936, 156116, 163670, 195145, 312232, 327340, 390290, 507377, 654680, 780580, 1014754, 1561160, 2029508, 2536885, 4059016, 5073770, 10147540, 20295080]

約数ペア:

[(1, 20295080), (2, 10147540), (4, 5073770), (5, 4059016), (8, 2536885), (10, 2029508), (13, 1561160), (20, 1014754), (26, 780580), (31, 654680), (40, 507377), (52, 390290), (62, 327340), (65, 312232), (104, 195145), (124, 163670), (130, 156116), (155, 130936), (248, 81835), (260, 78058), (310, 65468), (403, 50360), (520, 39029), (620, 32734), (806, 25180), (1240, 16367), (1259, 16120), (1612, 12590), (2015, 10072), (2518, 8060), (3224, 6295), (4030, 5036)]