20981910537

素因数分解:

$3^2\times 7^1\times {\mathrm{431}}^1\times {\mathrm{449}}^1\times {\mathrm{1721}}^1$

素因数の和:2614

約数の個数: 48

約数和(自身を含む): 34814707200

約数和(自身を除く): 13832796663

約数列:

[1, 3, 7, 9, 21, 63, 431, 449, 1293, 1347, 1721, 3017, 3143, 3879, 4041, 5163, 9051, 9429, 12047, 15489, 27153, 28287, 36141, 108423, 193519, 580557, 741751, 772729, 1354633, 1741671, 2225253, 2318187, 4063899, 5192257, 5409103, 6675759, 6954561, 12191697, 15576771, 16227309, 46730313, 48681927, 333046199, 999138597, 2331323393, 2997415791, 6993970179, 20981910537]

約数ペア:

[(1, 20981910537), (3, 6993970179), (7, 2997415791), (9, 2331323393), (21, 999138597), (63, 333046199), (431, 48681927), (449, 46730313), (1293, 16227309), (1347, 15576771), (1721, 12191697), (3017, 6954561), (3143, 6675759), (3879, 5409103), (4041, 5192257), (5163, 4063899), (9051, 2318187), (9429, 2225253), (12047, 1741671), (15489, 1354633), (27153, 772729), (28287, 741751), (36141, 580557), (108423, 193519)]