18790940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1699}}^1$

素因数の和:1794

約数の個数: 48

約数和(自身を含む): 45696000

約数和(自身を除く): 26905060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 790, 1106, 1580, 1699, 2212, 2765, 3398, 5530, 6796, 8495, 11060, 11893, 16990, 23786, 33980, 47572, 59465, 118930, 134221, 237860, 268442, 536884, 671105, 939547, 1342210, 1879094, 2684420, 3758188, 4697735, 9395470, 18790940]

約数ペア:

[(1, 18790940), (2, 9395470), (4, 4697735), (5, 3758188), (7, 2684420), (10, 1879094), (14, 1342210), (20, 939547), (28, 671105), (35, 536884), (70, 268442), (79, 237860), (140, 134221), (158, 118930), (316, 59465), (395, 47572), (553, 33980), (790, 23786), (1106, 16990), (1580, 11893), (1699, 11060), (2212, 8495), (2765, 6796), (3398, 5530)]