28545040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:320

約数の個数: 80

約数和(自身を含む): 71245440

約数和(自身を除く): 42700400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 139, 151, 170, 272, 278, 302, 340, 556, 604, 680, 695, 755, 1112, 1208, 1360, 1390, 1510, 2224, 2363, 2416, 2567, 2780, 3020, 4726, 5134, 5560, 6040, 9452, 10268, 11120, 11815, 12080, 12835, 18904, 20536, 20989, 23630, 25670, 37808, 41072, 41978, 47260, 51340, 83956, 94520, 102680, 104945, 167912, 189040, 205360, 209890, 335824, 356813, 419780, 713626, 839560, 1427252, 1679120, 1784065, 2854504, 3568130, 5709008, 7136260, 14272520, 28545040]

約数ペア:

[(1, 28545040), (2, 14272520), (4, 7136260), (5, 5709008), (8, 3568130), (10, 2854504), (16, 1784065), (17, 1679120), (20, 1427252), (34, 839560), (40, 713626), (68, 419780), (80, 356813), (85, 335824), (136, 209890), (139, 205360), (151, 189040), (170, 167912), (272, 104945), (278, 102680), (302, 94520), (340, 83956), (556, 51340), (604, 47260), (680, 41978), (695, 41072), (755, 37808), (1112, 25670), (1208, 23630), (1360, 20989), (1390, 20536), (1510, 18904), (2224, 12835), (2363, 12080), (2416, 11815), (2567, 11120), (2780, 10268), (3020, 9452), (4726, 6040), (5134, 5560)]