21549591

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 40780800

約数和(自身を除く): 19231209

約数列:

[1, 3, 7, 9, 17, 19, 21, 27, 51, 57, 63, 119, 133, 153, 171, 189, 323, 353, 357, 399, 459, 513, 969, 1059, 1071, 1197, 2261, 2471, 2907, 3177, 3213, 3591, 6001, 6707, 6783, 7413, 8721, 9531, 18003, 20121, 20349, 22239, 42007, 46949, 54009, 60363, 61047, 66717, 114019, 126021, 140847, 162027, 181089, 342057, 378063, 422541, 798133, 1026171, 1134189, 1267623, 2394399, 3078513, 7183197, 21549591]

約数ペア:

[(1, 21549591), (3, 7183197), (7, 3078513), (9, 2394399), (17, 1267623), (19, 1134189), (21, 1026171), (27, 798133), (51, 422541), (57, 378063), (63, 342057), (119, 181089), (133, 162027), (153, 140847), (171, 126021), (189, 114019), (323, 66717), (353, 61047), (357, 60363), (399, 54009), (459, 46949), (513, 42007), (969, 22239), (1059, 20349), (1071, 20121), (1197, 18003), (2261, 9531), (2471, 8721), (2907, 7413), (3177, 6783), (3213, 6707), (3591, 6001)]