21812940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{677}}^1$

素因数の和:871

約数の個数: 72

約数和(自身を含む): 66633840

約数和(自身を除く): 44820900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 179, 180, 358, 537, 677, 716, 895, 1074, 1354, 1611, 1790, 2031, 2148, 2685, 2708, 3222, 3385, 3580, 4062, 5370, 6093, 6444, 6770, 8055, 8124, 10155, 10740, 12186, 13540, 16110, 20310, 24372, 30465, 32220, 40620, 60930, 121183, 121860, 242366, 363549, 484732, 605915, 727098, 1090647, 1211830, 1454196, 1817745, 2181294, 2423660, 3635490, 4362588, 5453235, 7270980, 10906470, 21812940]

約数ペア:

[(1, 21812940), (2, 10906470), (3, 7270980), (4, 5453235), (5, 4362588), (6, 3635490), (9, 2423660), (10, 2181294), (12, 1817745), (15, 1454196), (18, 1211830), (20, 1090647), (30, 727098), (36, 605915), (45, 484732), (60, 363549), (90, 242366), (179, 121860), (180, 121183), (358, 60930), (537, 40620), (677, 32220), (716, 30465), (895, 24372), (1074, 20310), (1354, 16110), (1611, 13540), (1790, 12186), (2031, 10740), (2148, 10155), (2685, 8124), (2708, 8055), (3222, 6770), (3385, 6444), (3580, 6093), (4062, 5370)]