20661840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28697}}^1$

素因数の和:28716

約数の個数: 60

約数和(自身を含む): 69391764

約数和(自身を除く): 48729924

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28697, 57394, 86091, 114788, 143485, 172182, 229576, 258273, 286970, 344364, 430455, 459152, 516546, 573940, 688728, 860910, 1033092, 1147880, 1291365, 1377456, 1721820, 2066184, 2295760, 2582730, 3443640, 4132368, 5165460, 6887280, 10330920, 20661840]

約数ペア:

[(1, 20661840), (2, 10330920), (3, 6887280), (4, 5165460), (5, 4132368), (6, 3443640), (8, 2582730), (9, 2295760), (10, 2066184), (12, 1721820), (15, 1377456), (16, 1291365), (18, 1147880), (20, 1033092), (24, 860910), (30, 688728), (36, 573940), (40, 516546), (45, 459152), (48, 430455), (60, 344364), (72, 286970), (80, 258273), (90, 229576), (120, 172182), (144, 143485), (180, 114788), (240, 86091), (360, 57394), (720, 28697)]