20151705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 39223296

約数和(自身を除く): 19071591

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 41, 93, 105, 123, 151, 155, 205, 217, 287, 453, 465, 615, 651, 755, 861, 1057, 1085, 1271, 1435, 2265, 3171, 3255, 3813, 4305, 4681, 5285, 6191, 6355, 8897, 14043, 15855, 18573, 19065, 23405, 26691, 30955, 32767, 43337, 44485, 70215, 92865, 98301, 130011, 133455, 163835, 191921, 216685, 491505, 575763, 650055, 959605, 1343447, 2878815, 4030341, 6717235, 20151705]

約数ペア:

[(1, 20151705), (3, 6717235), (5, 4030341), (7, 2878815), (15, 1343447), (21, 959605), (31, 650055), (35, 575763), (41, 491505), (93, 216685), (105, 191921), (123, 163835), (151, 133455), (155, 130011), (205, 98301), (217, 92865), (287, 70215), (453, 44485), (465, 43337), (615, 32767), (651, 30955), (755, 26691), (861, 23405), (1057, 19065), (1085, 18573), (1271, 15855), (1435, 14043), (2265, 8897), (3171, 6355), (3255, 6191), (3813, 5285), (4305, 4681)]