20138520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{653}}^1$

素因数の和:924

約数の個数: 64

約数和(自身を含む): 60743520

約数和(自身を除く): 40605000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 257, 514, 653, 771, 1028, 1285, 1306, 1542, 1959, 2056, 2570, 2612, 3084, 3265, 3855, 3918, 5140, 5224, 6168, 6530, 7710, 7836, 9795, 10280, 13060, 15420, 15672, 19590, 26120, 30840, 39180, 78360, 167821, 335642, 503463, 671284, 839105, 1006926, 1342568, 1678210, 2013852, 2517315, 3356420, 4027704, 5034630, 6712840, 10069260, 20138520]

約数ペア:

[(1, 20138520), (2, 10069260), (3, 6712840), (4, 5034630), (5, 4027704), (6, 3356420), (8, 2517315), (10, 2013852), (12, 1678210), (15, 1342568), (20, 1006926), (24, 839105), (30, 671284), (40, 503463), (60, 335642), (120, 167821), (257, 78360), (514, 39180), (653, 30840), (771, 26120), (1028, 19590), (1285, 15672), (1306, 15420), (1542, 13060), (1959, 10280), (2056, 9795), (2570, 7836), (2612, 7710), (3084, 6530), (3265, 6168), (3855, 5224), (3918, 5140)]