20386809

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:419

約数の個数: 40

約数和(自身を含む): 32896512

約数和(自身を除く): 12509703

約数列:

[1, 3, 9, 23, 27, 31, 69, 81, 93, 207, 279, 353, 621, 713, 837, 1059, 1863, 2139, 2511, 3177, 6417, 8119, 9531, 10943, 19251, 24357, 28593, 32829, 57753, 73071, 98487, 219213, 251689, 295461, 657639, 755067, 886383, 2265201, 6795603, 20386809]

約数ペア:

[(1, 20386809), (3, 6795603), (9, 2265201), (23, 886383), (27, 755067), (31, 657639), (69, 295461), (81, 251689), (93, 219213), (207, 98487), (279, 73071), (353, 57753), (621, 32829), (713, 28593), (837, 24357), (1059, 19251), (1863, 10943), (2139, 9531), (2511, 8119), (3177, 6417)]