19925955

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^2$

素因数の和:157

約数の個数: 72

約数和(自身を含む): 42490656

約数和(自身を除く): 22564701

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 61, 63, 85, 105, 119, 153, 183, 255, 305, 315, 357, 427, 549, 595, 765, 915, 1037, 1071, 1281, 1785, 2135, 2745, 3111, 3721, 3843, 5185, 5355, 6405, 7259, 9333, 11163, 15555, 18605, 19215, 21777, 26047, 33489, 36295, 46665, 55815, 63257, 65331, 78141, 108885, 130235, 167445, 189771, 234423, 316285, 326655, 390705, 442799, 569313, 948855, 1172115, 1328397, 2213995, 2846565, 3985191, 6641985, 19925955]

約数ペア:

[(1, 19925955), (3, 6641985), (5, 3985191), (7, 2846565), (9, 2213995), (15, 1328397), (17, 1172115), (21, 948855), (35, 569313), (45, 442799), (51, 390705), (61, 326655), (63, 316285), (85, 234423), (105, 189771), (119, 167445), (153, 130235), (183, 108885), (255, 78141), (305, 65331), (315, 63257), (357, 55815), (427, 46665), (549, 36295), (595, 33489), (765, 26047), (915, 21777), (1037, 19215), (1071, 18605), (1281, 15555), (1785, 11163), (2135, 9333), (2745, 7259), (3111, 6405), (3721, 5355), (3843, 5185)]