28560520

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{9781}}^1$

素因数の和:9865

約数の個数: 32

約数和(自身を含む): 65148120

約数和(自身を除く): 36587600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 9781, 19562, 39124, 48905, 78248, 97810, 195620, 391240, 714013, 1428026, 2856052, 3570065, 5712104, 7140130, 14280260, 28560520]

約数ペア:

[(1, 28560520), (2, 14280260), (4, 7140130), (5, 5712104), (8, 3570065), (10, 2856052), (20, 1428026), (40, 714013), (73, 391240), (146, 195620), (292, 97810), (365, 78248), (584, 48905), (730, 39124), (1460, 19562), (2920, 9781)]