19898415

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^2$

素因数の和:121

約数の個数: 72

約数和(自身を含む): 39508560

約数和(自身を除く): 19610145

約数列:

[1, 3, 5, 9, 15, 17, 19, 37, 45, 51, 57, 85, 95, 111, 153, 171, 185, 255, 285, 323, 333, 555, 629, 703, 765, 855, 969, 1369, 1615, 1665, 1887, 2109, 2907, 3145, 3515, 4107, 4845, 5661, 6327, 6845, 9435, 10545, 11951, 12321, 14535, 20535, 23273, 26011, 28305, 31635, 35853, 59755, 61605, 69819, 78033, 107559, 116365, 130055, 179265, 209457, 234099, 349095, 390165, 442187, 537795, 1047285, 1170495, 1326561, 2210935, 3979683, 6632805, 19898415]

約数ペア:

[(1, 19898415), (3, 6632805), (5, 3979683), (9, 2210935), (15, 1326561), (17, 1170495), (19, 1047285), (37, 537795), (45, 442187), (51, 390165), (57, 349095), (85, 234099), (95, 209457), (111, 179265), (153, 130055), (171, 116365), (185, 107559), (255, 78033), (285, 69819), (323, 61605), (333, 59755), (555, 35853), (629, 31635), (703, 28305), (765, 26011), (855, 23273), (969, 20535), (1369, 14535), (1615, 12321), (1665, 11951), (1887, 10545), (2109, 9435), (2907, 6845), (3145, 6327), (3515, 5661), (4107, 4845)]