20824480

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{829}}^1$

素因数の和:1001

約数の個数: 48

約数和(自身を含む): 49570920

約数和(自身を除く): 28746440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 785, 829, 1256, 1570, 1658, 2512, 3140, 3316, 4145, 5024, 6280, 6632, 8290, 12560, 13264, 16580, 25120, 26528, 33160, 66320, 130153, 132640, 260306, 520612, 650765, 1041224, 1301530, 2082448, 2603060, 4164896, 5206120, 10412240, 20824480]

約数ペア:

[(1, 20824480), (2, 10412240), (4, 5206120), (5, 4164896), (8, 2603060), (10, 2082448), (16, 1301530), (20, 1041224), (32, 650765), (40, 520612), (80, 260306), (157, 132640), (160, 130153), (314, 66320), (628, 33160), (785, 26528), (829, 25120), (1256, 16580), (1570, 13264), (1658, 12560), (2512, 8290), (3140, 6632), (3316, 6280), (4145, 5024)]