18428775

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 32512800

約数和(自身を除く): 14084025

約数列:

[1, 3, 5, 15, 25, 29, 37, 75, 87, 111, 145, 185, 229, 435, 555, 687, 725, 925, 1073, 1145, 2175, 2775, 3219, 3435, 5365, 5725, 6641, 8473, 16095, 17175, 19923, 25419, 26825, 33205, 42365, 80475, 99615, 127095, 166025, 211825, 245717, 498075, 635475, 737151, 1228585, 3685755, 6142925, 18428775]

約数ペア:

[(1, 18428775), (3, 6142925), (5, 3685755), (15, 1228585), (25, 737151), (29, 635475), (37, 498075), (75, 245717), (87, 211825), (111, 166025), (145, 127095), (185, 99615), (229, 80475), (435, 42365), (555, 33205), (687, 26825), (725, 25419), (925, 19923), (1073, 17175), (1145, 16095), (2175, 8473), (2775, 6641), (3219, 5725), (3435, 5365)]