21690928

素因数分解:

$2^4\times 7^2\times {\mathrm{73}}^1\times {\mathrm{379}}^1$

素因数の和:474

約数の個数: 60

約数和(自身を含む): 49688040

約数和(自身を除く): 27997112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 73, 98, 112, 146, 196, 292, 379, 392, 511, 584, 758, 784, 1022, 1168, 1516, 2044, 2653, 3032, 3577, 4088, 5306, 6064, 7154, 8176, 10612, 14308, 18571, 21224, 27667, 28616, 37142, 42448, 55334, 57232, 74284, 110668, 148568, 193669, 221336, 297136, 387338, 442672, 774676, 1355683, 1549352, 2711366, 3098704, 5422732, 10845464, 21690928]

約数ペア:

[(1, 21690928), (2, 10845464), (4, 5422732), (7, 3098704), (8, 2711366), (14, 1549352), (16, 1355683), (28, 774676), (49, 442672), (56, 387338), (73, 297136), (98, 221336), (112, 193669), (146, 148568), (196, 110668), (292, 74284), (379, 57232), (392, 55334), (511, 42448), (584, 37142), (758, 28616), (784, 27667), (1022, 21224), (1168, 18571), (1516, 14308), (2044, 10612), (2653, 8176), (3032, 7154), (3577, 6064), (4088, 5306)]