205520080

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1049}}^1$

素因数の和:1172

約数の個数: 80

約数和(自身を含む): 499968000

約数和(自身を除く): 294447920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 79, 80, 124, 155, 158, 248, 310, 316, 395, 496, 620, 632, 790, 1049, 1240, 1264, 1580, 2098, 2449, 2480, 3160, 4196, 4898, 5245, 6320, 8392, 9796, 10490, 12245, 16784, 19592, 20980, 24490, 32519, 39184, 41960, 48980, 65038, 82871, 83920, 97960, 130076, 162595, 165742, 195920, 260152, 325190, 331484, 414355, 520304, 650380, 662968, 828710, 1300760, 1325936, 1657420, 2569001, 2601520, 3314840, 5138002, 6629680, 10276004, 12845005, 20552008, 25690010, 41104016, 51380020, 102760040, 205520080]

約数ペア:

[(1, 205520080), (2, 102760040), (4, 51380020), (5, 41104016), (8, 25690010), (10, 20552008), (16, 12845005), (20, 10276004), (31, 6629680), (40, 5138002), (62, 3314840), (79, 2601520), (80, 2569001), (124, 1657420), (155, 1325936), (158, 1300760), (248, 828710), (310, 662968), (316, 650380), (395, 520304), (496, 414355), (620, 331484), (632, 325190), (790, 260152), (1049, 195920), (1240, 165742), (1264, 162595), (1580, 130076), (2098, 97960), (2449, 83920), (2480, 82871), (3160, 65038), (4196, 48980), (4898, 41960), (5245, 39184), (6320, 32519), (8392, 24490), (9796, 20980), (10490, 19592), (12245, 16784)]