18125460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{997}}^1$

素因数の和:1113

約数の個数: 72

約数和(自身を含む): 55580616

約数和(自身を除く): 37455156

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 997, 1010, 1212, 1515, 1818, 1994, 2020, 2991, 3030, 3636, 3988, 4545, 4985, 5982, 6060, 8973, 9090, 9970, 11964, 14955, 17946, 18180, 19940, 29910, 35892, 44865, 59820, 89730, 100697, 179460, 201394, 302091, 402788, 503485, 604182, 906273, 1006970, 1208364, 1510455, 1812546, 2013940, 3020910, 3625092, 4531365, 6041820, 9062730, 18125460]

約数ペア:

[(1, 18125460), (2, 9062730), (3, 6041820), (4, 4531365), (5, 3625092), (6, 3020910), (9, 2013940), (10, 1812546), (12, 1510455), (15, 1208364), (18, 1006970), (20, 906273), (30, 604182), (36, 503485), (45, 402788), (60, 302091), (90, 201394), (101, 179460), (180, 100697), (202, 89730), (303, 59820), (404, 44865), (505, 35892), (606, 29910), (909, 19940), (997, 18180), (1010, 17946), (1212, 14955), (1515, 11964), (1818, 9970), (1994, 9090), (2020, 8973), (2991, 6060), (3030, 5982), (3636, 4985), (3988, 4545)]