19515550

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{313}}^1$

素因数の和:397

約数の個数: 48

約数和(自身を含む): 38546640

約数和(自身を除く): 19031090

約数列:

[1, 2, 5, 10, 25, 29, 43, 50, 58, 86, 145, 215, 290, 313, 430, 626, 725, 1075, 1247, 1450, 1565, 2150, 2494, 3130, 6235, 7825, 9077, 12470, 13459, 15650, 18154, 26918, 31175, 45385, 62350, 67295, 90770, 134590, 226925, 336475, 390311, 453850, 672950, 780622, 1951555, 3903110, 9757775, 19515550]

約数ペア:

[(1, 19515550), (2, 9757775), (5, 3903110), (10, 1951555), (25, 780622), (29, 672950), (43, 453850), (50, 390311), (58, 336475), (86, 226925), (145, 134590), (215, 90770), (290, 67295), (313, 62350), (430, 45385), (626, 31175), (725, 26918), (1075, 18154), (1247, 15650), (1450, 13459), (1565, 12470), (2150, 9077), (2494, 7825), (3130, 6235)]