20873943

素因数分解:

$3^5\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 34384896

約数和(自身を除く): 13510953

約数列:

[1, 3, 9, 17, 27, 31, 51, 81, 93, 153, 163, 243, 279, 459, 489, 527, 837, 1377, 1467, 1581, 2511, 2771, 4131, 4401, 4743, 5053, 7533, 8313, 13203, 14229, 15159, 24939, 39609, 42687, 45477, 74817, 85901, 128061, 136431, 224451, 257703, 409293, 673353, 773109, 1227879, 2319327, 6957981, 20873943]

約数ペア:

[(1, 20873943), (3, 6957981), (9, 2319327), (17, 1227879), (27, 773109), (31, 673353), (51, 409293), (81, 257703), (93, 224451), (153, 136431), (163, 128061), (243, 85901), (279, 74817), (459, 45477), (489, 42687), (527, 39609), (837, 24939), (1377, 15159), (1467, 14229), (1581, 13203), (2511, 8313), (2771, 7533), (4131, 5053), (4401, 4743)]