71811640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1549}}^1$

素因数の和:1640

約数の個数: 64

約数和(自身を含む): 172980000

約数和(自身を除く): 101168360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 488, 610, 760, 1159, 1220, 1549, 2318, 2440, 3098, 4636, 5795, 6196, 7745, 9272, 11590, 12392, 15490, 23180, 29431, 30980, 46360, 58862, 61960, 94489, 117724, 147155, 188978, 235448, 294310, 377956, 472445, 588620, 755912, 944890, 1177240, 1795291, 1889780, 3590582, 3779560, 7181164, 8976455, 14362328, 17952910, 35905820, 71811640]

約数ペア:

[(1, 71811640), (2, 35905820), (4, 17952910), (5, 14362328), (8, 8976455), (10, 7181164), (19, 3779560), (20, 3590582), (38, 1889780), (40, 1795291), (61, 1177240), (76, 944890), (95, 755912), (122, 588620), (152, 472445), (190, 377956), (244, 294310), (305, 235448), (380, 188978), (488, 147155), (610, 117724), (760, 94489), (1159, 61960), (1220, 58862), (1549, 46360), (2318, 30980), (2440, 29431), (3098, 23180), (4636, 15490), (5795, 12392), (6196, 11590), (7745, 9272)]