17919993

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1601}}^1$

素因数の和:1665

約数の個数: 32

約数和(自身を含む): 30143232

約数和(自身を除く): 12223239

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 1601, 3731, 4803, 11193, 11207, 20813, 33621, 62439, 65641, 145691, 196923, 437073, 459487, 853333, 1378461, 2559999, 5973331, 17919993]

約数ペア:

[(1, 17919993), (3, 5973331), (7, 2559999), (13, 1378461), (21, 853333), (39, 459487), (41, 437073), (91, 196923), (123, 145691), (273, 65641), (287, 62439), (533, 33621), (861, 20813), (1599, 11207), (1601, 11193), (3731, 4803)]