20957820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{277}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 64077888

約数和(自身を除く): 43120068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 97, 130, 156, 194, 195, 260, 277, 291, 388, 390, 485, 554, 582, 780, 831, 970, 1108, 1164, 1261, 1385, 1455, 1662, 1940, 2522, 2770, 2910, 3324, 3601, 3783, 4155, 5044, 5540, 5820, 6305, 7202, 7566, 8310, 10803, 12610, 14404, 15132, 16620, 18005, 18915, 21606, 25220, 26869, 36010, 37830, 43212, 53738, 54015, 72020, 75660, 80607, 107476, 108030, 134345, 161214, 216060, 268690, 322428, 349297, 403035, 537380, 698594, 806070, 1047891, 1397188, 1612140, 1746485, 2095782, 3492970, 4191564, 5239455, 6985940, 10478910, 20957820]

約数ペア:

[(1, 20957820), (2, 10478910), (3, 6985940), (4, 5239455), (5, 4191564), (6, 3492970), (10, 2095782), (12, 1746485), (13, 1612140), (15, 1397188), (20, 1047891), (26, 806070), (30, 698594), (39, 537380), (52, 403035), (60, 349297), (65, 322428), (78, 268690), (97, 216060), (130, 161214), (156, 134345), (194, 108030), (195, 107476), (260, 80607), (277, 75660), (291, 72020), (388, 54015), (390, 53738), (485, 43212), (554, 37830), (582, 36010), (780, 26869), (831, 25220), (970, 21606), (1108, 18915), (1164, 18005), (1261, 16620), (1385, 15132), (1455, 14404), (1662, 12610), (1940, 10803), (2522, 8310), (2770, 7566), (2910, 7202), (3324, 6305), (3601, 5820), (3783, 5540), (4155, 5044)]