19565215

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:219

約数の個数: 32

約数和(自身を含む): 26174016

約数和(自身を除く): 6608801

約数列:

[1, 5, 17, 43, 53, 85, 101, 215, 265, 505, 731, 901, 1717, 2279, 3655, 4343, 4505, 5353, 8585, 11395, 21715, 26765, 38743, 73831, 91001, 193715, 230179, 369155, 455005, 1150895, 3913043, 19565215]

約数ペア:

[(1, 19565215), (5, 3913043), (17, 1150895), (43, 455005), (53, 369155), (85, 230179), (101, 193715), (215, 91001), (265, 73831), (505, 38743), (731, 26765), (901, 21715), (1717, 11395), (2279, 8585), (3655, 5353), (4343, 4505)]