78517980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7151}}^1$

素因数の和:7227

約数の個数: 72

約数和(自身を含む): 242109504

約数和(自身を除く): 163591524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 61, 90, 122, 180, 183, 244, 305, 366, 549, 610, 732, 915, 1098, 1220, 1830, 2196, 2745, 3660, 5490, 7151, 10980, 14302, 21453, 28604, 35755, 42906, 64359, 71510, 85812, 107265, 128718, 143020, 214530, 257436, 321795, 429060, 436211, 643590, 872422, 1287180, 1308633, 1744844, 2181055, 2617266, 3925899, 4362110, 5234532, 6543165, 7851798, 8724220, 13086330, 15703596, 19629495, 26172660, 39258990, 78517980]

約数ペア:

[(1, 78517980), (2, 39258990), (3, 26172660), (4, 19629495), (5, 15703596), (6, 13086330), (9, 8724220), (10, 7851798), (12, 6543165), (15, 5234532), (18, 4362110), (20, 3925899), (30, 2617266), (36, 2181055), (45, 1744844), (60, 1308633), (61, 1287180), (90, 872422), (122, 643590), (180, 436211), (183, 429060), (244, 321795), (305, 257436), (366, 214530), (549, 143020), (610, 128718), (732, 107265), (915, 85812), (1098, 71510), (1220, 64359), (1830, 42906), (2196, 35755), (2745, 28604), (3660, 21453), (5490, 14302), (7151, 10980)]