19628704

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:509

約数の個数: 48

約数和(自身を含む): 40836096

約数和(自身を除く): 21207392

約数列:

[1, 2, 4, 8, 16, 31, 32, 47, 62, 94, 124, 188, 248, 376, 421, 496, 752, 842, 992, 1457, 1504, 1684, 2914, 3368, 5828, 6736, 11656, 13051, 13472, 19787, 23312, 26102, 39574, 46624, 52204, 79148, 104408, 158296, 208816, 316592, 417632, 613397, 633184, 1226794, 2453588, 4907176, 9814352, 19628704]

約数ペア:

[(1, 19628704), (2, 9814352), (4, 4907176), (8, 2453588), (16, 1226794), (31, 633184), (32, 613397), (47, 417632), (62, 316592), (94, 208816), (124, 158296), (188, 104408), (248, 79148), (376, 52204), (421, 46624), (496, 39574), (752, 26102), (842, 23312), (992, 19787), (1457, 13472), (1504, 13051), (1684, 11656), (2914, 6736), (3368, 5828)]