257015265

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:171

約数の個数: 128

約数和(自身を含む): 503967744

約数和(自身を除く): 246952479

約数列:

[1, 3, 5, 13, 15, 17, 31, 39, 41, 51, 61, 65, 85, 93, 123, 155, 183, 195, 205, 221, 255, 305, 403, 465, 527, 533, 615, 663, 697, 793, 915, 1037, 1105, 1209, 1271, 1581, 1599, 1891, 2015, 2091, 2379, 2501, 2635, 2665, 3111, 3315, 3485, 3813, 3965, 5185, 5673, 6045, 6355, 6851, 7503, 7905, 7995, 9061, 9455, 10455, 11895, 12505, 13481, 15555, 16523, 19065, 20553, 21607, 24583, 27183, 28365, 32147, 32513, 34255, 37515, 40443, 42517, 45305, 49569, 64821, 67405, 73749, 77531, 82615, 96441, 97539, 102765, 108035, 122915, 127551, 135915, 160735, 162565, 202215, 212585, 232593, 247845, 280891, 324105, 368745, 387655, 417911, 482205, 487695, 552721, 637755, 842673, 1007903, 1162965, 1253733, 1318027, 1404455, 1658163, 2089555, 2763605, 3023709, 3954081, 4213365, 5039515, 6268665, 6590135, 8290815, 15118545, 17134351, 19770405, 51403053, 85671755, 257015265]

約数ペア:

[(1, 257015265), (3, 85671755), (5, 51403053), (13, 19770405), (15, 17134351), (17, 15118545), (31, 8290815), (39, 6590135), (41, 6268665), (51, 5039515), (61, 4213365), (65, 3954081), (85, 3023709), (93, 2763605), (123, 2089555), (155, 1658163), (183, 1404455), (195, 1318027), (205, 1253733), (221, 1162965), (255, 1007903), (305, 842673), (403, 637755), (465, 552721), (527, 487695), (533, 482205), (615, 417911), (663, 387655), (697, 368745), (793, 324105), (915, 280891), (1037, 247845), (1105, 232593), (1209, 212585), (1271, 202215), (1581, 162565), (1599, 160735), (1891, 135915), (2015, 127551), (2091, 122915), (2379, 108035), (2501, 102765), (2635, 97539), (2665, 96441), (3111, 82615), (3315, 77531), (3485, 73749), (3813, 67405), (3965, 64821), (5185, 49569), (5673, 45305), (6045, 42517), (6355, 40443), (6851, 37515), (7503, 34255), (7905, 32513), (7995, 32147), (9061, 28365), (9455, 27183), (10455, 24583), (11895, 21607), (12505, 20553), (13481, 19065), (15555, 16523)]