19642740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25183}}^1$

素因数の和:25208

約数の個数: 48

約数和(自身を含む): 59232768

約数和(自身を除く): 39590028

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25183, 50366, 75549, 100732, 125915, 151098, 251830, 302196, 327379, 377745, 503660, 654758, 755490, 982137, 1309516, 1510980, 1636895, 1964274, 3273790, 3928548, 4910685, 6547580, 9821370, 19642740]

約数ペア:

[(1, 19642740), (2, 9821370), (3, 6547580), (4, 4910685), (5, 3928548), (6, 3273790), (10, 1964274), (12, 1636895), (13, 1510980), (15, 1309516), (20, 982137), (26, 755490), (30, 654758), (39, 503660), (52, 377745), (60, 327379), (65, 302196), (78, 251830), (130, 151098), (156, 125915), (195, 100732), (260, 75549), (390, 50366), (780, 25183)]