21981050

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{4831}}^1$

素因数の和:4863

約数の個数: 48

約数和(自身を含む): 50330112

約数和(自身を除く): 28349062

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 91, 130, 175, 182, 325, 350, 455, 650, 910, 2275, 4550, 4831, 9662, 24155, 33817, 48310, 62803, 67634, 120775, 125606, 169085, 241550, 314015, 338170, 439621, 628030, 845425, 879242, 1570075, 1690850, 2198105, 3140150, 4396210, 10990525, 21981050]

約数ペア:

[(1, 21981050), (2, 10990525), (5, 4396210), (7, 3140150), (10, 2198105), (13, 1690850), (14, 1570075), (25, 879242), (26, 845425), (35, 628030), (50, 439621), (65, 338170), (70, 314015), (91, 241550), (130, 169085), (175, 125606), (182, 120775), (325, 67634), (350, 62803), (455, 48310), (650, 33817), (910, 24155), (2275, 9662), (4550, 4831)]