19500285

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{617}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 37198656

約数和(自身を除く): 17698371

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 49, 105, 129, 147, 215, 245, 301, 617, 645, 735, 903, 1505, 1851, 2107, 3085, 4319, 4515, 6321, 9255, 10535, 12957, 21595, 26531, 30233, 31605, 64785, 79593, 90699, 132655, 151165, 185717, 397965, 453495, 557151, 928585, 1300019, 2785755, 3900057, 6500095, 19500285]

約数ペア:

[(1, 19500285), (3, 6500095), (5, 3900057), (7, 2785755), (15, 1300019), (21, 928585), (35, 557151), (43, 453495), (49, 397965), (105, 185717), (129, 151165), (147, 132655), (215, 90699), (245, 79593), (301, 64785), (617, 31605), (645, 30233), (735, 26531), (903, 21595), (1505, 12957), (1851, 10535), (2107, 9255), (3085, 6321), (4319, 4515)]