20016045

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{359}}^1$

素因数の和:439

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 21455955

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 59, 63, 105, 135, 177, 189, 295, 315, 359, 413, 531, 885, 945, 1077, 1239, 1593, 1795, 2065, 2513, 2655, 3231, 3717, 5385, 6195, 7539, 7965, 9693, 11151, 12565, 16155, 18585, 21181, 22617, 37695, 48465, 55755, 63543, 67851, 105905, 113085, 148267, 190629, 317715, 339255, 444801, 571887, 741335, 953145, 1334403, 2224005, 2859435, 4003209, 6672015, 20016045]

約数ペア:

[(1, 20016045), (3, 6672015), (5, 4003209), (7, 2859435), (9, 2224005), (15, 1334403), (21, 953145), (27, 741335), (35, 571887), (45, 444801), (59, 339255), (63, 317715), (105, 190629), (135, 148267), (177, 113085), (189, 105905), (295, 67851), (315, 63543), (359, 55755), (413, 48465), (531, 37695), (885, 22617), (945, 21181), (1077, 18585), (1239, 16155), (1593, 12565), (1795, 11151), (2065, 9693), (2513, 7965), (2655, 7539), (3231, 6195), (3717, 5385)]