20417229

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{461}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 36516480

約数和(自身を除く): 16099251

約数列:

[1, 3, 7, 9, 19, 21, 37, 57, 63, 111, 133, 171, 259, 333, 399, 461, 703, 777, 1197, 1383, 2109, 2331, 3227, 4149, 4921, 6327, 8759, 9681, 14763, 17057, 26277, 29043, 44289, 51171, 61313, 78831, 119399, 153513, 183939, 324083, 358197, 551817, 972249, 1074591, 2268581, 2916747, 6805743, 20417229]

約数ペア:

[(1, 20417229), (3, 6805743), (7, 2916747), (9, 2268581), (19, 1074591), (21, 972249), (37, 551817), (57, 358197), (63, 324083), (111, 183939), (133, 153513), (171, 119399), (259, 78831), (333, 61313), (399, 51171), (461, 44289), (703, 29043), (777, 26277), (1197, 17057), (1383, 14763), (2109, 9681), (2331, 8759), (3227, 6327), (4149, 4921)]