21873420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{887}}^1$

素因数の和:1039

約数の個数: 72

約数和(自身を含む): 66909024

約数和(自身を除く): 45035604

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 137, 180, 274, 411, 548, 685, 822, 887, 1233, 1370, 1644, 1774, 2055, 2466, 2661, 2740, 3548, 4110, 4435, 4932, 5322, 6165, 7983, 8220, 8870, 10644, 12330, 13305, 15966, 17740, 24660, 26610, 31932, 39915, 53220, 79830, 121519, 159660, 243038, 364557, 486076, 607595, 729114, 1093671, 1215190, 1458228, 1822785, 2187342, 2430380, 3645570, 4374684, 5468355, 7291140, 10936710, 21873420]

約数ペア:

[(1, 21873420), (2, 10936710), (3, 7291140), (4, 5468355), (5, 4374684), (6, 3645570), (9, 2430380), (10, 2187342), (12, 1822785), (15, 1458228), (18, 1215190), (20, 1093671), (30, 729114), (36, 607595), (45, 486076), (60, 364557), (90, 243038), (137, 159660), (180, 121519), (274, 79830), (411, 53220), (548, 39915), (685, 31932), (822, 26610), (887, 24660), (1233, 17740), (1370, 15966), (1644, 13305), (1774, 12330), (2055, 10644), (2466, 8870), (2661, 8220), (2740, 7983), (3548, 6165), (4110, 5322), (4435, 4932)]