19878840

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55219}}^1$

素因数の和:55236

約数の個数: 48

約数和(自身を含む): 64607400

約数和(自身を除く): 44728560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55219, 110438, 165657, 220876, 276095, 331314, 441752, 496971, 552190, 662628, 828285, 993942, 1104380, 1325256, 1656570, 1987884, 2208760, 2484855, 3313140, 3975768, 4969710, 6626280, 9939420, 19878840]

約数ペア:

[(1, 19878840), (2, 9939420), (3, 6626280), (4, 4969710), (5, 3975768), (6, 3313140), (8, 2484855), (9, 2208760), (10, 1987884), (12, 1656570), (15, 1325256), (18, 1104380), (20, 993942), (24, 828285), (30, 662628), (36, 552190), (40, 496971), (45, 441752), (60, 331314), (72, 276095), (90, 220876), (120, 165657), (180, 110438), (360, 55219)]