19171719

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:268

約数の個数: 48

約数和(自身を含む): 33606144

約数和(自身を除く): 14434425

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 101, 131, 161, 207, 303, 393, 483, 707, 909, 917, 1179, 1449, 2121, 2323, 2751, 3013, 6363, 6969, 8253, 9039, 13231, 16261, 20907, 21091, 27117, 39693, 48783, 63273, 92617, 119079, 146349, 189819, 277851, 304313, 833553, 912939, 2130191, 2738817, 6390573, 19171719]

約数ペア:

[(1, 19171719), (3, 6390573), (7, 2738817), (9, 2130191), (21, 912939), (23, 833553), (63, 304313), (69, 277851), (101, 189819), (131, 146349), (161, 119079), (207, 92617), (303, 63273), (393, 48783), (483, 39693), (707, 27117), (909, 21091), (917, 20907), (1179, 16261), (1449, 13231), (2121, 9039), (2323, 8253), (2751, 6969), (3013, 6363)]