21798735

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 42491904

約数和(自身を除く): 20693169

約数列:

[1, 3, 5, 7, 15, 21, 31, 35, 37, 93, 105, 111, 155, 181, 185, 217, 259, 465, 543, 555, 651, 777, 905, 1085, 1147, 1267, 1295, 2715, 3255, 3441, 3801, 3885, 5611, 5735, 6335, 6697, 8029, 16833, 17205, 19005, 20091, 24087, 28055, 33485, 39277, 40145, 46879, 84165, 100455, 117831, 120435, 140637, 196385, 207607, 234395, 589155, 622821, 703185, 1038035, 1453249, 3114105, 4359747, 7266245, 21798735]

約数ペア:

[(1, 21798735), (3, 7266245), (5, 4359747), (7, 3114105), (15, 1453249), (21, 1038035), (31, 703185), (35, 622821), (37, 589155), (93, 234395), (105, 207607), (111, 196385), (155, 140637), (181, 120435), (185, 117831), (217, 100455), (259, 84165), (465, 46879), (543, 40145), (555, 39277), (651, 33485), (777, 28055), (905, 24087), (1085, 20091), (1147, 19005), (1267, 17205), (1295, 16833), (2715, 8029), (3255, 6697), (3441, 6335), (3801, 5735), (3885, 5611)]