320260720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{1051}}^1$

素因数の和:1370

約数の個数: 80

約数和(自身を含む): 805385952

約数和(自身を除く): 485125232

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 293, 520, 586, 1040, 1051, 1172, 1465, 2102, 2344, 2930, 3809, 4204, 4688, 5255, 5860, 7618, 8408, 10510, 11720, 13663, 15236, 16816, 19045, 21020, 23440, 27326, 30472, 38090, 42040, 54652, 60944, 68315, 76180, 84080, 109304, 136630, 152360, 218608, 273260, 304720, 307943, 546520, 615886, 1093040, 1231772, 1539715, 2463544, 3079430, 4003259, 4927088, 6158860, 8006518, 12317720, 16013036, 20016295, 24635440, 32026072, 40032590, 64052144, 80065180, 160130360, 320260720]

約数ペア:

[(1, 320260720), (2, 160130360), (4, 80065180), (5, 64052144), (8, 40032590), (10, 32026072), (13, 24635440), (16, 20016295), (20, 16013036), (26, 12317720), (40, 8006518), (52, 6158860), (65, 4927088), (80, 4003259), (104, 3079430), (130, 2463544), (208, 1539715), (260, 1231772), (293, 1093040), (520, 615886), (586, 546520), (1040, 307943), (1051, 304720), (1172, 273260), (1465, 218608), (2102, 152360), (2344, 136630), (2930, 109304), (3809, 84080), (4204, 76180), (4688, 68315), (5255, 60944), (5860, 54652), (7618, 42040), (8408, 38090), (10510, 30472), (11720, 27326), (13663, 23440), (15236, 21020), (16816, 19045)]