21555090

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{6473}}^1$

素因数の和:6523

約数の個数: 48

約数和(自身を含む): 57566808

約数和(自身を除く): 36011718

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 37, 45, 74, 90, 111, 185, 222, 333, 370, 555, 666, 1110, 1665, 3330, 6473, 12946, 19419, 32365, 38838, 58257, 64730, 97095, 116514, 194190, 239501, 291285, 479002, 582570, 718503, 1197505, 1437006, 2155509, 2395010, 3592515, 4311018, 7185030, 10777545, 21555090]

約数ペア:

[(1, 21555090), (2, 10777545), (3, 7185030), (5, 4311018), (6, 3592515), (9, 2395010), (10, 2155509), (15, 1437006), (18, 1197505), (30, 718503), (37, 582570), (45, 479002), (74, 291285), (90, 239501), (111, 194190), (185, 116514), (222, 97095), (333, 64730), (370, 58257), (555, 38838), (666, 32365), (1110, 19419), (1665, 12946), (3330, 6473)]