201990915

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{71249}}^1$

素因数の和:71273

約数の個数: 40

約数和(自身を含む): 413820000

約数和(自身を除く): 211829085

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 71249, 213747, 356245, 498743, 641241, 1068735, 1496229, 1923723, 2493715, 3206205, 4488687, 5771169, 7481145, 9618615, 13466061, 22443435, 28855845, 40398183, 67330305, 201990915]

約数ペア:

[(1, 201990915), (3, 67330305), (5, 40398183), (7, 28855845), (9, 22443435), (15, 13466061), (21, 9618615), (27, 7481145), (35, 5771169), (45, 4488687), (63, 3206205), (81, 2493715), (105, 1923723), (135, 1496229), (189, 1068735), (315, 641241), (405, 498743), (567, 356245), (945, 213747), (2835, 71249)]