31685840

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 77126016

約数和(自身を除く): 45440176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 61, 80, 86, 122, 151, 172, 215, 244, 302, 305, 344, 430, 488, 604, 610, 688, 755, 860, 976, 1208, 1220, 1510, 1720, 2416, 2440, 2623, 3020, 3440, 4880, 5246, 6040, 6493, 9211, 10492, 12080, 12986, 13115, 18422, 20984, 25972, 26230, 32465, 36844, 41968, 46055, 51944, 52460, 64930, 73688, 92110, 103888, 104920, 129860, 147376, 184220, 209840, 259720, 368440, 396073, 519440, 736880, 792146, 1584292, 1980365, 3168584, 3960730, 6337168, 7921460, 15842920, 31685840]

約数ペア:

[(1, 31685840), (2, 15842920), (4, 7921460), (5, 6337168), (8, 3960730), (10, 3168584), (16, 1980365), (20, 1584292), (40, 792146), (43, 736880), (61, 519440), (80, 396073), (86, 368440), (122, 259720), (151, 209840), (172, 184220), (215, 147376), (244, 129860), (302, 104920), (305, 103888), (344, 92110), (430, 73688), (488, 64930), (604, 52460), (610, 51944), (688, 46055), (755, 41968), (860, 36844), (976, 32465), (1208, 26230), (1220, 25972), (1510, 20984), (1720, 18422), (2416, 13115), (2440, 12986), (2623, 12080), (3020, 10492), (3440, 9211), (4880, 6493), (5246, 6040)]