20956260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:493

約数の個数: 96

約数和(自身を含む): 64294272

約数和(自身を除く): 43338012

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 67, 78, 130, 134, 156, 195, 201, 260, 268, 335, 390, 401, 402, 670, 780, 802, 804, 871, 1005, 1203, 1340, 1604, 1742, 2005, 2010, 2406, 2613, 3484, 4010, 4020, 4355, 4812, 5213, 5226, 6015, 8020, 8710, 10426, 10452, 12030, 13065, 15639, 17420, 20852, 24060, 26065, 26130, 26867, 31278, 52130, 52260, 53734, 62556, 78195, 80601, 104260, 107468, 134335, 156390, 161202, 268670, 312780, 322404, 349271, 403005, 537340, 698542, 806010, 1047813, 1397084, 1612020, 1746355, 2095626, 3492710, 4191252, 5239065, 6985420, 10478130, 20956260]

約数ペア:

[(1, 20956260), (2, 10478130), (3, 6985420), (4, 5239065), (5, 4191252), (6, 3492710), (10, 2095626), (12, 1746355), (13, 1612020), (15, 1397084), (20, 1047813), (26, 806010), (30, 698542), (39, 537340), (52, 403005), (60, 349271), (65, 322404), (67, 312780), (78, 268670), (130, 161202), (134, 156390), (156, 134335), (195, 107468), (201, 104260), (260, 80601), (268, 78195), (335, 62556), (390, 53734), (401, 52260), (402, 52130), (670, 31278), (780, 26867), (802, 26130), (804, 26065), (871, 24060), (1005, 20852), (1203, 17420), (1340, 15639), (1604, 13065), (1742, 12030), (2005, 10452), (2010, 10426), (2406, 8710), (2613, 8020), (3484, 6015), (4010, 5226), (4020, 5213), (4355, 4812)]