13405905

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:515

約数の個数: 40

約数和(自身を含む): 24393600

約数和(自身を除く): 10987695

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 237, 395, 405, 419, 711, 1185, 1257, 2095, 2133, 3555, 3771, 6285, 6399, 10665, 11313, 18855, 31995, 33101, 33939, 56565, 99303, 165505, 169695, 297909, 496515, 893727, 1489545, 2681181, 4468635, 13405905]

約数ペア:

[(1, 13405905), (3, 4468635), (5, 2681181), (9, 1489545), (15, 893727), (27, 496515), (45, 297909), (79, 169695), (81, 165505), (135, 99303), (237, 56565), (395, 33939), (405, 33101), (419, 31995), (711, 18855), (1185, 11313), (1257, 10665), (2095, 6399), (2133, 6285), (3555, 3771)]