20218945

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 6997055

約数列:

[1, 5, 19, 29, 41, 95, 145, 179, 205, 551, 779, 895, 1189, 2755, 3401, 3895, 5191, 5945, 7339, 17005, 22591, 25955, 36695, 98629, 112955, 139441, 212831, 493145, 697205, 1064155, 4043789, 20218945]

約数ペア:

[(1, 20218945), (5, 4043789), (19, 1064155), (29, 697205), (41, 493145), (95, 212831), (145, 139441), (179, 112955), (205, 98629), (551, 36695), (779, 25955), (895, 22591), (1189, 17005), (2755, 7339), (3401, 5945), (3895, 5191)]