289901240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{179}}^1\times {\mathrm{2131}}^1$

素因数の和:2340

約数の個数: 64

約数和(自身を含む): 690768000

約数和(自身を除く): 400866760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 179, 190, 358, 380, 716, 760, 895, 1432, 1790, 2131, 3401, 3580, 4262, 6802, 7160, 8524, 10655, 13604, 17005, 17048, 21310, 27208, 34010, 40489, 42620, 68020, 80978, 85240, 136040, 161956, 202445, 323912, 381449, 404890, 762898, 809780, 1525796, 1619560, 1907245, 3051592, 3814490, 7247531, 7628980, 14495062, 15257960, 28990124, 36237655, 57980248, 72475310, 144950620, 289901240]

約数ペア:

[(1, 289901240), (2, 144950620), (4, 72475310), (5, 57980248), (8, 36237655), (10, 28990124), (19, 15257960), (20, 14495062), (38, 7628980), (40, 7247531), (76, 3814490), (95, 3051592), (152, 1907245), (179, 1619560), (190, 1525796), (358, 809780), (380, 762898), (716, 404890), (760, 381449), (895, 323912), (1432, 202445), (1790, 161956), (2131, 136040), (3401, 85240), (3580, 80978), (4262, 68020), (6802, 42620), (7160, 40489), (8524, 34010), (10655, 27208), (13604, 21310), (17005, 17048)]