18910465

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:673

約数の個数: 32

約数和(自身を含む): 27740160

約数和(自身を除く): 8829695

約数列:

[1, 5, 7, 29, 31, 35, 145, 155, 203, 217, 601, 899, 1015, 1085, 3005, 4207, 4495, 6293, 17429, 18631, 21035, 31465, 87145, 93155, 122003, 130417, 540299, 610015, 652085, 2701495, 3782093, 18910465]

約数ペア:

[(1, 18910465), (5, 3782093), (7, 2701495), (29, 652085), (31, 610015), (35, 540299), (145, 130417), (155, 122003), (203, 93155), (217, 87145), (601, 31465), (899, 21035), (1015, 18631), (1085, 17429), (3005, 6293), (4207, 4495)]