81403725

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2879}}^1$

素因数の和:2934

約数の個数: 48

約数和(自身を含む): 149990400

約数和(自身を除く): 68586675

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 65, 75, 87, 145, 195, 325, 377, 435, 725, 975, 1131, 1885, 2175, 2879, 5655, 8637, 9425, 14395, 28275, 37427, 43185, 71975, 83491, 112281, 187135, 215925, 250473, 417455, 561405, 935675, 1085383, 1252365, 2087275, 2807025, 3256149, 5426915, 6261825, 16280745, 27134575, 81403725]

約数ペア:

[(1, 81403725), (3, 27134575), (5, 16280745), (13, 6261825), (15, 5426915), (25, 3256149), (29, 2807025), (39, 2087275), (65, 1252365), (75, 1085383), (87, 935675), (145, 561405), (195, 417455), (325, 250473), (377, 215925), (435, 187135), (725, 112281), (975, 83491), (1131, 71975), (1885, 43185), (2175, 37427), (2879, 28275), (5655, 14395), (8637, 9425)]