138784380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{330439}}^1$

素因数の和:330458

約数の個数: 48

約数和(自身を含む): 444111360

約数和(自身を除く): 305326980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 330439, 660878, 991317, 1321756, 1652195, 1982634, 2313073, 3304390, 3965268, 4626146, 4956585, 6608780, 6939219, 9252292, 9913170, 11565365, 13878438, 19826340, 23130730, 27756876, 34696095, 46261460, 69392190, 138784380]

約数ペア:

[(1, 138784380), (2, 69392190), (3, 46261460), (4, 34696095), (5, 27756876), (6, 23130730), (7, 19826340), (10, 13878438), (12, 11565365), (14, 9913170), (15, 9252292), (20, 6939219), (21, 6608780), (28, 4956585), (30, 4626146), (35, 3965268), (42, 3304390), (60, 2313073), (70, 1982634), (84, 1652195), (105, 1321756), (140, 991317), (210, 660878), (420, 330439)]