19882005

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1$

素因数の和:99

約数の個数: 96

約数和(自身を含む): 40476672

約数和(自身を除く): 20594667

約数列:

[1, 3, 5, 11, 13, 15, 23, 31, 33, 39, 55, 65, 69, 93, 115, 143, 155, 165, 169, 195, 253, 299, 341, 345, 403, 429, 465, 507, 713, 715, 759, 845, 897, 1023, 1209, 1265, 1495, 1705, 1859, 2015, 2139, 2145, 2535, 3289, 3565, 3795, 3887, 4433, 4485, 5115, 5239, 5577, 6045, 7843, 9269, 9295, 9867, 10695, 11661, 13299, 15717, 16445, 19435, 22165, 23529, 26195, 27807, 27885, 39215, 42757, 46345, 49335, 57629, 58305, 66495, 78585, 101959, 117645, 120497, 128271, 139035, 172887, 213785, 288145, 305877, 361491, 509795, 602485, 641355, 864435, 1325467, 1529385, 1807455, 3976401, 6627335, 19882005]

約数ペア:

[(1, 19882005), (3, 6627335), (5, 3976401), (11, 1807455), (13, 1529385), (15, 1325467), (23, 864435), (31, 641355), (33, 602485), (39, 509795), (55, 361491), (65, 305877), (69, 288145), (93, 213785), (115, 172887), (143, 139035), (155, 128271), (165, 120497), (169, 117645), (195, 101959), (253, 78585), (299, 66495), (341, 58305), (345, 57629), (403, 49335), (429, 46345), (465, 42757), (507, 39215), (713, 27885), (715, 27807), (759, 26195), (845, 23529), (897, 22165), (1023, 19435), (1209, 16445), (1265, 15717), (1495, 13299), (1705, 11661), (1859, 10695), (2015, 9867), (2139, 9295), (2145, 9269), (2535, 7843), (3289, 6045), (3565, 5577), (3795, 5239), (3887, 5115), (4433, 4485)]