21728800

素因数分解:

$2^5\times 5^2\times {\mathrm{157}}^1\times {\mathrm{173}}^1$

素因数の和:350

約数の個数: 72

約数和(自身を含む): 53691876

約数和(自身を除く): 31963076

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 157, 160, 173, 200, 314, 346, 400, 628, 692, 785, 800, 865, 1256, 1384, 1570, 1730, 2512, 2768, 3140, 3460, 3925, 4325, 5024, 5536, 6280, 6920, 7850, 8650, 12560, 13840, 15700, 17300, 25120, 27161, 27680, 31400, 34600, 54322, 62800, 69200, 108644, 125600, 135805, 138400, 217288, 271610, 434576, 543220, 679025, 869152, 1086440, 1358050, 2172880, 2716100, 4345760, 5432200, 10864400, 21728800]

約数ペア:

[(1, 21728800), (2, 10864400), (4, 5432200), (5, 4345760), (8, 2716100), (10, 2172880), (16, 1358050), (20, 1086440), (25, 869152), (32, 679025), (40, 543220), (50, 434576), (80, 271610), (100, 217288), (157, 138400), (160, 135805), (173, 125600), (200, 108644), (314, 69200), (346, 62800), (400, 54322), (628, 34600), (692, 31400), (785, 27680), (800, 27161), (865, 25120), (1256, 17300), (1384, 15700), (1570, 13840), (1730, 12560), (2512, 8650), (2768, 7850), (3140, 6920), (3460, 6280), (3925, 5536), (4325, 5024)]