19840100

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{4049}}^1$

素因数の和:4077

約数の個数: 54

約数和(自身を含む): 50094450

約数和(自身を除く): 30254350

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4049, 4900, 8098, 16196, 20245, 28343, 40490, 56686, 80980, 101225, 113372, 141715, 198401, 202450, 283430, 396802, 404900, 566860, 708575, 793604, 992005, 1417150, 1984010, 2834300, 3968020, 4960025, 9920050, 19840100]

約数ペア:

[(1, 19840100), (2, 9920050), (4, 4960025), (5, 3968020), (7, 2834300), (10, 1984010), (14, 1417150), (20, 992005), (25, 793604), (28, 708575), (35, 566860), (49, 404900), (50, 396802), (70, 283430), (98, 202450), (100, 198401), (140, 141715), (175, 113372), (196, 101225), (245, 80980), (350, 56686), (490, 40490), (700, 28343), (980, 20245), (1225, 16196), (2450, 8098), (4049, 4900)]