204555420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{2531}}^1$

素因数の和:2995

約数の個数: 72

約数和(自身を含む): 622112400

約数和(自身を除く): 417556980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 449, 898, 1347, 1796, 2245, 2531, 2694, 4041, 4490, 5062, 5388, 6735, 7593, 8082, 8980, 10124, 12655, 13470, 15186, 16164, 20205, 22779, 25310, 26940, 30372, 37965, 40410, 45558, 50620, 75930, 80820, 91116, 113895, 151860, 227790, 455580, 1136419, 2272838, 3409257, 4545676, 5682095, 6818514, 10227771, 11364190, 13637028, 17046285, 20455542, 22728380, 34092570, 40911084, 51138855, 68185140, 102277710, 204555420]

約数ペア:

[(1, 204555420), (2, 102277710), (3, 68185140), (4, 51138855), (5, 40911084), (6, 34092570), (9, 22728380), (10, 20455542), (12, 17046285), (15, 13637028), (18, 11364190), (20, 10227771), (30, 6818514), (36, 5682095), (45, 4545676), (60, 3409257), (90, 2272838), (180, 1136419), (449, 455580), (898, 227790), (1347, 151860), (1796, 113895), (2245, 91116), (2531, 80820), (2694, 75930), (4041, 50620), (4490, 45558), (5062, 40410), (5388, 37965), (6735, 30372), (7593, 26940), (8082, 25310), (8980, 22779), (10124, 20205), (12655, 16164), (13470, 15186)]