205121395

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{383}}^1$

素因数の和:531

約数の個数: 32

約数和(自身を含む): 262766592

約数和(自身を除く): 57645197

約数列:

[1, 5, 43, 47, 53, 215, 235, 265, 383, 1915, 2021, 2279, 2491, 10105, 11395, 12455, 16469, 18001, 20299, 82345, 90005, 101495, 107113, 535565, 774043, 872857, 954053, 3870215, 4364285, 4770265, 41024279, 205121395]

約数ペア:

[(1, 205121395), (5, 41024279), (43, 4770265), (47, 4364285), (53, 3870215), (215, 954053), (235, 872857), (265, 774043), (383, 535565), (1915, 107113), (2021, 101495), (2279, 90005), (2491, 82345), (10105, 20299), (11395, 18001), (12455, 16469)]