20809211590

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{171679}}^1$

素因数の和:171757

約数の個数: 64

約数和(自身を含む): 42719477760

約数和(自身を除く): 21910266170

約数列:

[1, 2, 5, 10, 17, 23, 31, 34, 46, 62, 85, 115, 155, 170, 230, 310, 391, 527, 713, 782, 1054, 1426, 1955, 2635, 3565, 3910, 5270, 7130, 12121, 24242, 60605, 121210, 171679, 343358, 858395, 1716790, 2918543, 3948617, 5322049, 5837086, 7897234, 10644098, 14592715, 19743085, 26610245, 29185430, 39486170, 53220490, 67126489, 90474833, 122407127, 134252978, 180949666, 244814254, 335632445, 452374165, 612035635, 671264890, 904748330, 1224071270, 2080921159, 4161842318, 10404605795, 20809211590]

約数ペア:

[(1, 20809211590), (2, 10404605795), (5, 4161842318), (10, 2080921159), (17, 1224071270), (23, 904748330), (31, 671264890), (34, 612035635), (46, 452374165), (62, 335632445), (85, 244814254), (115, 180949666), (155, 134252978), (170, 122407127), (230, 90474833), (310, 67126489), (391, 53220490), (527, 39486170), (713, 29185430), (782, 26610245), (1054, 19743085), (1426, 14592715), (1955, 10644098), (2635, 7897234), (3565, 5837086), (3910, 5322049), (5270, 3948617), (7130, 2918543), (12121, 1716790), (24242, 858395), (60605, 343358), (121210, 171679)]