20299980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{17807}}^1$

素因数の和:17838

約数の個数: 48

約数和(自身を含む): 59834880

約数和(自身を除く): 39534900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 76, 95, 114, 190, 228, 285, 380, 570, 1140, 17807, 35614, 53421, 71228, 89035, 106842, 178070, 213684, 267105, 338333, 356140, 534210, 676666, 1014999, 1068420, 1353332, 1691665, 2029998, 3383330, 4059996, 5074995, 6766660, 10149990, 20299980]

約数ペア:

[(1, 20299980), (2, 10149990), (3, 6766660), (4, 5074995), (5, 4059996), (6, 3383330), (10, 2029998), (12, 1691665), (15, 1353332), (19, 1068420), (20, 1014999), (30, 676666), (38, 534210), (57, 356140), (60, 338333), (76, 267105), (95, 213684), (114, 178070), (190, 106842), (228, 89035), (285, 71228), (380, 53421), (570, 35614), (1140, 17807)]