18955664

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:352

約数の個数: 80

約数和(自身を含む): 46330368

約数和(自身を除く): 27374704

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 47, 52, 56, 91, 94, 104, 112, 182, 188, 208, 277, 329, 364, 376, 554, 611, 658, 728, 752, 1108, 1222, 1316, 1456, 1939, 2216, 2444, 2632, 3601, 3878, 4277, 4432, 4888, 5264, 7202, 7756, 8554, 9776, 13019, 14404, 15512, 17108, 25207, 26038, 28808, 31024, 34216, 50414, 52076, 57616, 68432, 91133, 100828, 104152, 169247, 182266, 201656, 208304, 338494, 364532, 403312, 676988, 729064, 1184729, 1353976, 1458128, 2369458, 2707952, 4738916, 9477832, 18955664]

約数ペア:

[(1, 18955664), (2, 9477832), (4, 4738916), (7, 2707952), (8, 2369458), (13, 1458128), (14, 1353976), (16, 1184729), (26, 729064), (28, 676988), (47, 403312), (52, 364532), (56, 338494), (91, 208304), (94, 201656), (104, 182266), (112, 169247), (182, 104152), (188, 100828), (208, 91133), (277, 68432), (329, 57616), (364, 52076), (376, 50414), (554, 34216), (611, 31024), (658, 28808), (728, 26038), (752, 25207), (1108, 17108), (1222, 15512), (1316, 14404), (1456, 13019), (1939, 9776), (2216, 8554), (2444, 7756), (2632, 7202), (3601, 5264), (3878, 4888), (4277, 4432)]