21616420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2617}}^1$

素因数の和:2692

約数の個数: 48

約数和(自身を含む): 52778880

約数和(自身を除く): 31162460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 59, 70, 118, 140, 236, 295, 413, 590, 826, 1180, 1652, 2065, 2617, 4130, 5234, 8260, 10468, 13085, 18319, 26170, 36638, 52340, 73276, 91595, 154403, 183190, 308806, 366380, 617612, 772015, 1080821, 1544030, 2161642, 3088060, 4323284, 5404105, 10808210, 21616420]

約数ペア:

[(1, 21616420), (2, 10808210), (4, 5404105), (5, 4323284), (7, 3088060), (10, 2161642), (14, 1544030), (20, 1080821), (28, 772015), (35, 617612), (59, 366380), (70, 308806), (118, 183190), (140, 154403), (236, 91595), (295, 73276), (413, 52340), (590, 36638), (826, 26170), (1180, 18319), (1652, 13085), (2065, 10468), (2617, 8260), (4130, 5234)]