20504340

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4219}}^1$

素因数の和:4243

約数の個数: 72

約数和(自身を含む): 64515360

約数和(自身を除く): 44011020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4219, 4860, 8438, 12657, 16876, 21095, 25314, 37971, 42190, 50628, 63285, 75942, 84380, 113913, 126570, 151884, 189855, 227826, 253140, 341739, 379710, 455652, 569565, 683478, 759420, 1025217, 1139130, 1366956, 1708695, 2050434, 2278260, 3417390, 4100868, 5126085, 6834780, 10252170, 20504340]

約数ペア:

[(1, 20504340), (2, 10252170), (3, 6834780), (4, 5126085), (5, 4100868), (6, 3417390), (9, 2278260), (10, 2050434), (12, 1708695), (15, 1366956), (18, 1139130), (20, 1025217), (27, 759420), (30, 683478), (36, 569565), (45, 455652), (54, 379710), (60, 341739), (81, 253140), (90, 227826), (108, 189855), (135, 151884), (162, 126570), (180, 113913), (243, 84380), (270, 75942), (324, 63285), (405, 50628), (486, 42190), (540, 37971), (810, 25314), (972, 21095), (1215, 16876), (1620, 12657), (2430, 8438), (4219, 4860)]