20880112

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:182

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 26259728

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 43, 44, 62, 86, 88, 89, 124, 172, 176, 178, 248, 341, 344, 356, 473, 496, 682, 688, 712, 946, 979, 1333, 1364, 1424, 1892, 1958, 2666, 2728, 2759, 3784, 3827, 3916, 5332, 5456, 5518, 7568, 7654, 7832, 10664, 11036, 14663, 15308, 15664, 21328, 22072, 29326, 30349, 30616, 42097, 44144, 58652, 60698, 61232, 84194, 117304, 118637, 121396, 168388, 234608, 237274, 242792, 336776, 474548, 485584, 673552, 949096, 1305007, 1898192, 2610014, 5220028, 10440056, 20880112]

約数ペア:

[(1, 20880112), (2, 10440056), (4, 5220028), (8, 2610014), (11, 1898192), (16, 1305007), (22, 949096), (31, 673552), (43, 485584), (44, 474548), (62, 336776), (86, 242792), (88, 237274), (89, 234608), (124, 168388), (172, 121396), (176, 118637), (178, 117304), (248, 84194), (341, 61232), (344, 60698), (356, 58652), (473, 44144), (496, 42097), (682, 30616), (688, 30349), (712, 29326), (946, 22072), (979, 21328), (1333, 15664), (1364, 15308), (1424, 14663), (1892, 11036), (1958, 10664), (2666, 7832), (2728, 7654), (2759, 7568), (3784, 5518), (3827, 5456), (3916, 5332)]