19776645

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{8969}}^1$

素因数の和:8994

約数の個数: 36

約数和(自身を含む): 39880620

約数和(自身を除く): 20103975

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 245, 315, 441, 735, 2205, 8969, 26907, 44845, 62783, 80721, 134535, 188349, 313915, 403605, 439481, 565047, 941745, 1318443, 2197405, 2825235, 3955329, 6592215, 19776645]

約数ペア:

[(1, 19776645), (3, 6592215), (5, 3955329), (7, 2825235), (9, 2197405), (15, 1318443), (21, 941745), (35, 565047), (45, 439481), (49, 403605), (63, 313915), (105, 188349), (147, 134535), (245, 80721), (315, 62783), (441, 44845), (735, 26907), (2205, 8969)]