18902403

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 31508400

約数和(自身を除く): 12605997

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 619, 783, 1053, 1131, 1857, 2349, 3393, 5571, 8047, 10179, 16713, 17951, 24141, 30537, 50139, 53853, 72423, 161559, 217269, 233363, 484677, 651807, 700089, 1454031, 2100267, 6300801, 18902403]

約数ペア:

[(1, 18902403), (3, 6300801), (9, 2100267), (13, 1454031), (27, 700089), (29, 651807), (39, 484677), (81, 233363), (87, 217269), (117, 161559), (261, 72423), (351, 53853), (377, 50139), (619, 30537), (783, 24141), (1053, 17951), (1131, 16713), (1857, 10179), (2349, 8047), (3393, 5571)]