15520520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{7321}}^1$

素因数の和:7385

約数の個数: 32

約数和(自身を含む): 35584920

約数和(自身を除く): 20064400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 7321, 14642, 29284, 36605, 58568, 73210, 146420, 292840, 388013, 776026, 1552052, 1940065, 3104104, 3880130, 7760260, 15520520]

約数ペア:

[(1, 15520520), (2, 7760260), (4, 3880130), (5, 3104104), (8, 1940065), (10, 1552052), (20, 776026), (40, 388013), (53, 292840), (106, 146420), (212, 73210), (265, 58568), (424, 36605), (530, 29284), (1060, 14642), (2120, 7321)]