28150821

素因数分解:

$3^5\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 45147648

約数和(自身を除く): 16996827

約数列:

[1, 3, 9, 27, 31, 37, 81, 93, 101, 111, 243, 279, 303, 333, 837, 909, 999, 1147, 2511, 2727, 2997, 3131, 3441, 3737, 7533, 8181, 8991, 9393, 10323, 11211, 24543, 28179, 30969, 33633, 84537, 92907, 100899, 115847, 253611, 278721, 302697, 347541, 760833, 908091, 1042623, 3127869, 9383607, 28150821]

約数ペア:

[(1, 28150821), (3, 9383607), (9, 3127869), (27, 1042623), (31, 908091), (37, 760833), (81, 347541), (93, 302697), (101, 278721), (111, 253611), (243, 115847), (279, 100899), (303, 92907), (333, 84537), (837, 33633), (909, 30969), (999, 28179), (1147, 24543), (2511, 11211), (2727, 10323), (2997, 9393), (3131, 8991), (3441, 8181), (3737, 7533)]