201515240

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:554

約数の個数: 64

約数和(自身を含む): 461894400

約数和(自身を除く): 260379160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 197, 214, 239, 394, 428, 478, 535, 788, 856, 956, 985, 1070, 1195, 1576, 1912, 1970, 2140, 2390, 3940, 4280, 4780, 7880, 9560, 21079, 25573, 42158, 47083, 51146, 84316, 94166, 102292, 105395, 127865, 168632, 188332, 204584, 210790, 235415, 255730, 376664, 421580, 470830, 511460, 843160, 941660, 1022920, 1883320, 5037881, 10075762, 20151524, 25189405, 40303048, 50378810, 100757620, 201515240]

約数ペア:

[(1, 201515240), (2, 100757620), (4, 50378810), (5, 40303048), (8, 25189405), (10, 20151524), (20, 10075762), (40, 5037881), (107, 1883320), (197, 1022920), (214, 941660), (239, 843160), (394, 511460), (428, 470830), (478, 421580), (535, 376664), (788, 255730), (856, 235415), (956, 210790), (985, 204584), (1070, 188332), (1195, 168632), (1576, 127865), (1912, 105395), (1970, 102292), (2140, 94166), (2390, 84316), (3940, 51146), (4280, 47083), (4780, 42158), (7880, 25573), (9560, 21079)]