19448975

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 30331392

約数和(自身を除く): 10882417

約数列:

[1, 5, 7, 13, 25, 35, 65, 83, 91, 103, 175, 325, 415, 455, 515, 581, 721, 1079, 1339, 2075, 2275, 2575, 2905, 3605, 5395, 6695, 7553, 8549, 9373, 14525, 18025, 26975, 33475, 37765, 42745, 46865, 59843, 111137, 188825, 213725, 234325, 299215, 555685, 777959, 1496075, 2778425, 3889795, 19448975]

約数ペア:

[(1, 19448975), (5, 3889795), (7, 2778425), (13, 1496075), (25, 777959), (35, 555685), (65, 299215), (83, 234325), (91, 213725), (103, 188825), (175, 111137), (325, 59843), (415, 46865), (455, 42745), (515, 37765), (581, 33475), (721, 26975), (1079, 18025), (1339, 14525), (2075, 9373), (2275, 8549), (2575, 7553), (2905, 6695), (3605, 5395)]