19969425

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:463

約数の個数: 72

約数和(自身を含む): 42298880

約数和(自身を除く): 22329455

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 31, 35, 45, 63, 75, 93, 105, 155, 175, 217, 225, 279, 315, 409, 465, 525, 651, 775, 1085, 1227, 1395, 1575, 1953, 2045, 2325, 2863, 3255, 3681, 5425, 6135, 6975, 8589, 9765, 10225, 12679, 14315, 16275, 18405, 25767, 30675, 38037, 42945, 48825, 63395, 71575, 88753, 92025, 114111, 128835, 190185, 214725, 266259, 316975, 443765, 570555, 644175, 798777, 950925, 1331295, 2218825, 2852775, 3993885, 6656475, 19969425]

約数ペア:

[(1, 19969425), (3, 6656475), (5, 3993885), (7, 2852775), (9, 2218825), (15, 1331295), (21, 950925), (25, 798777), (31, 644175), (35, 570555), (45, 443765), (63, 316975), (75, 266259), (93, 214725), (105, 190185), (155, 128835), (175, 114111), (217, 92025), (225, 88753), (279, 71575), (315, 63395), (409, 48825), (465, 42945), (525, 38037), (651, 30675), (775, 25767), (1085, 18405), (1227, 16275), (1395, 14315), (1575, 12679), (1953, 10225), (2045, 9765), (2325, 8589), (2863, 6975), (3255, 6135), (3681, 5425)]