201221960

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{36191}}^1$

素因数の和:36341

約数の個数: 32

約数和(自身を含む): 456019200

約数和(自身を除く): 254797240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 36191, 72382, 144764, 180955, 289528, 361910, 723820, 1447640, 5030549, 10061098, 20122196, 25152745, 40244392, 50305490, 100610980, 201221960]

約数ペア:

[(1, 201221960), (2, 100610980), (4, 50305490), (5, 40244392), (8, 25152745), (10, 20122196), (20, 10061098), (40, 5030549), (139, 1447640), (278, 723820), (556, 361910), (695, 289528), (1112, 180955), (1390, 144764), (2780, 72382), (5560, 36191)]