19729605

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1579}}^1$

素因数の和:1618

約数の個数: 48

約数和(自身を含む): 38905920

約数和(自身を除く): 19176315

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 49, 51, 85, 105, 119, 147, 245, 255, 357, 595, 735, 833, 1579, 1785, 2499, 4165, 4737, 7895, 11053, 12495, 23685, 26843, 33159, 55265, 77371, 80529, 134215, 165795, 187901, 232113, 386855, 402645, 563703, 939505, 1160565, 1315307, 2818515, 3945921, 6576535, 19729605]

約数ペア:

[(1, 19729605), (3, 6576535), (5, 3945921), (7, 2818515), (15, 1315307), (17, 1160565), (21, 939505), (35, 563703), (49, 402645), (51, 386855), (85, 232113), (105, 187901), (119, 165795), (147, 134215), (245, 80529), (255, 77371), (357, 55265), (595, 33159), (735, 26843), (833, 23685), (1579, 12495), (1785, 11053), (2499, 7895), (4165, 4737)]