78875440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2309}}^1$

素因数の和:2390

約数の個数: 80

約数和(自身を含む): 213111360

約数和(自身を除く): 134235920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1708, 2135, 2309, 2440, 3416, 4270, 4618, 4880, 6832, 8540, 9236, 11545, 16163, 17080, 18472, 23090, 32326, 34160, 36944, 46180, 64652, 80815, 92360, 129304, 140849, 161630, 184720, 258608, 281698, 323260, 563396, 646520, 704245, 985943, 1126792, 1293040, 1408490, 1971886, 2253584, 2816980, 3943772, 4929715, 5633960, 7887544, 9859430, 11267920, 15775088, 19718860, 39437720, 78875440]

約数ペア:

[(1, 78875440), (2, 39437720), (4, 19718860), (5, 15775088), (7, 11267920), (8, 9859430), (10, 7887544), (14, 5633960), (16, 4929715), (20, 3943772), (28, 2816980), (35, 2253584), (40, 1971886), (56, 1408490), (61, 1293040), (70, 1126792), (80, 985943), (112, 704245), (122, 646520), (140, 563396), (244, 323260), (280, 281698), (305, 258608), (427, 184720), (488, 161630), (560, 140849), (610, 129304), (854, 92360), (976, 80815), (1220, 64652), (1708, 46180), (2135, 36944), (2309, 34160), (2440, 32326), (3416, 23090), (4270, 18472), (4618, 17080), (4880, 16163), (6832, 11545), (8540, 9236)]