21121912

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^3\times {\mathrm{31}}^1$

素因数の和:113

約数の個数: 64

約数和(自身を含む): 48844800

約数和(自身を除く): 27722888

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 31, 46, 56, 62, 92, 124, 161, 184, 217, 248, 322, 434, 529, 644, 713, 868, 1058, 1288, 1426, 1736, 2116, 2852, 3703, 4232, 4991, 5704, 7406, 9982, 12167, 14812, 16399, 19964, 24334, 29624, 32798, 39928, 48668, 65596, 85169, 97336, 114793, 131192, 170338, 229586, 340676, 377177, 459172, 681352, 754354, 918344, 1508708, 2640239, 3017416, 5280478, 10560956, 21121912]

約数ペア:

[(1, 21121912), (2, 10560956), (4, 5280478), (7, 3017416), (8, 2640239), (14, 1508708), (23, 918344), (28, 754354), (31, 681352), (46, 459172), (56, 377177), (62, 340676), (92, 229586), (124, 170338), (161, 131192), (184, 114793), (217, 97336), (248, 85169), (322, 65596), (434, 48668), (529, 39928), (644, 32798), (713, 29624), (868, 24334), (1058, 19964), (1288, 16399), (1426, 14812), (1736, 12167), (2116, 9982), (2852, 7406), (3703, 5704), (4232, 4991)]