20210520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:337

約数の個数: 128

約数和(自身を含む): 67495680

約数和(自身を除く): 47285160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 61, 66, 88, 110, 120, 122, 132, 165, 183, 220, 244, 251, 264, 305, 330, 366, 440, 488, 502, 610, 660, 671, 732, 753, 915, 1004, 1220, 1255, 1320, 1342, 1464, 1506, 1830, 2008, 2013, 2440, 2510, 2684, 2761, 3012, 3355, 3660, 3765, 4026, 5020, 5368, 5522, 6024, 6710, 7320, 7530, 8052, 8283, 10040, 10065, 11044, 13420, 13805, 15060, 15311, 16104, 16566, 20130, 22088, 26840, 27610, 30120, 30622, 33132, 40260, 41415, 45933, 55220, 61244, 66264, 76555, 80520, 82830, 91866, 110440, 122488, 153110, 165660, 168421, 183732, 229665, 306220, 331320, 336842, 367464, 459330, 505263, 612440, 673684, 842105, 918660, 1010526, 1347368, 1684210, 1837320, 2021052, 2526315, 3368420, 4042104, 5052630, 6736840, 10105260, 20210520]

約数ペア:

[(1, 20210520), (2, 10105260), (3, 6736840), (4, 5052630), (5, 4042104), (6, 3368420), (8, 2526315), (10, 2021052), (11, 1837320), (12, 1684210), (15, 1347368), (20, 1010526), (22, 918660), (24, 842105), (30, 673684), (33, 612440), (40, 505263), (44, 459330), (55, 367464), (60, 336842), (61, 331320), (66, 306220), (88, 229665), (110, 183732), (120, 168421), (122, 165660), (132, 153110), (165, 122488), (183, 110440), (220, 91866), (244, 82830), (251, 80520), (264, 76555), (305, 66264), (330, 61244), (366, 55220), (440, 45933), (488, 41415), (502, 40260), (610, 33132), (660, 30622), (671, 30120), (732, 27610), (753, 26840), (915, 22088), (1004, 20130), (1220, 16566), (1255, 16104), (1320, 15311), (1342, 15060), (1464, 13805), (1506, 13420), (1830, 11044), (2008, 10065), (2013, 10040), (2440, 8283), (2510, 8052), (2684, 7530), (2761, 7320), (3012, 6710), (3355, 6024), (3660, 5522), (3765, 5368), (4026, 5020)]