20177703

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 36481536

約数和(自身を除く): 16303833

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 71, 91, 117, 213, 273, 347, 497, 639, 819, 923, 1041, 1491, 2429, 2769, 3123, 4473, 4511, 6461, 7287, 8307, 13533, 19383, 21861, 24637, 31577, 40599, 58149, 73911, 94731, 172459, 221733, 284193, 320281, 517377, 960843, 1552131, 2241967, 2882529, 6725901, 20177703]

約数ペア:

[(1, 20177703), (3, 6725901), (7, 2882529), (9, 2241967), (13, 1552131), (21, 960843), (39, 517377), (63, 320281), (71, 284193), (91, 221733), (117, 172459), (213, 94731), (273, 73911), (347, 58149), (497, 40599), (639, 31577), (819, 24637), (923, 21861), (1041, 19383), (1491, 13533), (2429, 8307), (2769, 7287), (3123, 6461), (4473, 4511)]