25302920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{313}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 59685120

約数和(自身を除く): 34382200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 47, 86, 94, 172, 188, 215, 235, 313, 344, 376, 430, 470, 626, 860, 940, 1252, 1565, 1720, 1880, 2021, 2504, 3130, 4042, 6260, 8084, 10105, 12520, 13459, 14711, 16168, 20210, 26918, 29422, 40420, 53836, 58844, 67295, 73555, 80840, 107672, 117688, 134590, 147110, 269180, 294220, 538360, 588440, 632573, 1265146, 2530292, 3162865, 5060584, 6325730, 12651460, 25302920]

約数ペア:

[(1, 25302920), (2, 12651460), (4, 6325730), (5, 5060584), (8, 3162865), (10, 2530292), (20, 1265146), (40, 632573), (43, 588440), (47, 538360), (86, 294220), (94, 269180), (172, 147110), (188, 134590), (215, 117688), (235, 107672), (313, 80840), (344, 73555), (376, 67295), (430, 58844), (470, 53836), (626, 40420), (860, 29422), (940, 26918), (1252, 20210), (1565, 16168), (1720, 14711), (1880, 13459), (2021, 12520), (2504, 10105), (3130, 8084), (4042, 6260)]