391990641

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^2\times {\mathrm{9227}}^1$

素因数の和:9278

約数の個数: 36

約数和(自身を含む): 645923088

約数和(自身を除く): 253932447

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 289, 357, 833, 867, 2023, 2499, 6069, 9227, 14161, 27681, 42483, 64589, 156859, 193767, 452123, 470577, 1098013, 1356369, 2666603, 3294039, 7686091, 7999809, 18666221, 23058273, 55998663, 130663547, 391990641]

約数ペア:

[(1, 391990641), (3, 130663547), (7, 55998663), (17, 23058273), (21, 18666221), (49, 7999809), (51, 7686091), (119, 3294039), (147, 2666603), (289, 1356369), (357, 1098013), (833, 470577), (867, 452123), (2023, 193767), (2499, 156859), (6069, 64589), (9227, 42483), (14161, 27681)]