247445720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{431}}^1\times {\mathrm{463}}^1$

素因数の和:936

約数の個数: 64

約数和(自身を含む): 577290240

約数和(自身を除く): 329844520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 431, 463, 620, 862, 926, 1240, 1724, 1852, 2155, 2315, 3448, 3704, 4310, 4630, 8620, 9260, 13361, 14353, 17240, 18520, 26722, 28706, 53444, 57412, 66805, 71765, 106888, 114824, 133610, 143530, 199553, 267220, 287060, 399106, 534440, 574120, 798212, 997765, 1596424, 1995530, 3991060, 6186143, 7982120, 12372286, 24744572, 30930715, 49489144, 61861430, 123722860, 247445720]

約数ペア:

[(1, 247445720), (2, 123722860), (4, 61861430), (5, 49489144), (8, 30930715), (10, 24744572), (20, 12372286), (31, 7982120), (40, 6186143), (62, 3991060), (124, 1995530), (155, 1596424), (248, 997765), (310, 798212), (431, 574120), (463, 534440), (620, 399106), (862, 287060), (926, 267220), (1240, 199553), (1724, 143530), (1852, 133610), (2155, 114824), (2315, 106888), (3448, 71765), (3704, 66805), (4310, 57412), (4630, 53444), (8620, 28706), (9260, 26722), (13361, 18520), (14353, 17240)]