28720718

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{359}}^1$

素因数の和:572

約数の個数: 32

約数和(自身を含む): 49533120

約数和(自身を除く): 20812402

約数列:

[1, 2, 13, 17, 26, 34, 181, 221, 359, 362, 442, 718, 2353, 3077, 4667, 4706, 6103, 6154, 9334, 12206, 40001, 64979, 79339, 80002, 129958, 158678, 844727, 1104643, 1689454, 2209286, 14360359, 28720718]

約数ペア:

[(1, 28720718), (2, 14360359), (13, 2209286), (17, 1689454), (26, 1104643), (34, 844727), (181, 158678), (221, 129958), (359, 80002), (362, 79339), (442, 64979), (718, 40001), (2353, 12206), (3077, 9334), (4667, 6154), (4706, 6103)]