21434841

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:151

約数の個数: 48

約数和(自身を含む): 35071680

約数和(自身を除く): 13636839

約数列:

[1, 3, 9, 17, 27, 41, 51, 67, 123, 153, 201, 289, 369, 459, 603, 697, 867, 1107, 1139, 1809, 2091, 2601, 2747, 3417, 6273, 7803, 8241, 10251, 11849, 18819, 19363, 24723, 30753, 35547, 46699, 58089, 74169, 106641, 140097, 174267, 319923, 420291, 522801, 793883, 1260873, 2381649, 7144947, 21434841]

約数ペア:

[(1, 21434841), (3, 7144947), (9, 2381649), (17, 1260873), (27, 793883), (41, 522801), (51, 420291), (67, 319923), (123, 174267), (153, 140097), (201, 106641), (289, 74169), (369, 58089), (459, 46699), (603, 35547), (697, 30753), (867, 24723), (1107, 19363), (1139, 18819), (1809, 11849), (2091, 10251), (2601, 8241), (2747, 7803), (3417, 6273)]