18656885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 6889867

約数列:

[1, 5, 13, 31, 47, 65, 155, 197, 235, 403, 611, 985, 1457, 2015, 2561, 3055, 6107, 7285, 9259, 12805, 18941, 30535, 46295, 79391, 94705, 120367, 287029, 396955, 601835, 1435145, 3731377, 18656885]

約数ペア:

[(1, 18656885), (5, 3731377), (13, 1435145), (31, 601835), (47, 396955), (65, 287029), (155, 120367), (197, 94705), (235, 79391), (403, 46295), (611, 30535), (985, 18941), (1457, 12805), (2015, 9259), (2561, 7285), (3055, 6107)]