21563276

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 46267200

約数和(自身を除く): 24703924

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 89, 119, 178, 238, 356, 476, 509, 623, 1018, 1246, 1513, 2036, 2492, 3026, 3563, 6052, 7126, 8653, 10591, 14252, 17306, 21182, 34612, 42364, 45301, 60571, 90602, 121142, 181204, 242284, 317107, 634214, 770117, 1268428, 1540234, 3080468, 5390819, 10781638, 21563276]

約数ペア:

[(1, 21563276), (2, 10781638), (4, 5390819), (7, 3080468), (14, 1540234), (17, 1268428), (28, 770117), (34, 634214), (68, 317107), (89, 242284), (119, 181204), (178, 121142), (238, 90602), (356, 60571), (476, 45301), (509, 42364), (623, 34612), (1018, 21182), (1246, 17306), (1513, 14252), (2036, 10591), (2492, 8653), (3026, 7126), (3563, 6052)]