15311985

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:218

約数の個数: 64

約数和(自身を含む): 29030400

約数和(自身を除く): 13718415

約数列:

[1, 3, 5, 13, 15, 17, 31, 39, 51, 65, 85, 93, 149, 155, 195, 221, 255, 403, 447, 465, 527, 663, 745, 1105, 1209, 1581, 1937, 2015, 2235, 2533, 2635, 3315, 4619, 5811, 6045, 6851, 7599, 7905, 9685, 12665, 13857, 20553, 23095, 29055, 32929, 34255, 37995, 60047, 69285, 78523, 98787, 102765, 164645, 180141, 235569, 300235, 392615, 493935, 900705, 1020799, 1177845, 3062397, 5103995, 15311985]

約数ペア:

[(1, 15311985), (3, 5103995), (5, 3062397), (13, 1177845), (15, 1020799), (17, 900705), (31, 493935), (39, 392615), (51, 300235), (65, 235569), (85, 180141), (93, 164645), (149, 102765), (155, 98787), (195, 78523), (221, 69285), (255, 60047), (403, 37995), (447, 34255), (465, 32929), (527, 29055), (663, 23095), (745, 20553), (1105, 13857), (1209, 12665), (1581, 9685), (1937, 7905), (2015, 7599), (2235, 6851), (2533, 6045), (2635, 5811), (3315, 4619)]