21739005

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:366

約数の個数: 48

約数和(自身を含む): 40373424

約数和(自身を除く): 18634419

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 157, 181, 255, 471, 543, 765, 785, 905, 1413, 1629, 2355, 2669, 2715, 3077, 7065, 8007, 8145, 9231, 13345, 15385, 24021, 27693, 28417, 40035, 46155, 85251, 120105, 138465, 142085, 255753, 426255, 483089, 1278765, 1449267, 2415445, 4347801, 7246335, 21739005]

約数ペア:

[(1, 21739005), (3, 7246335), (5, 4347801), (9, 2415445), (15, 1449267), (17, 1278765), (45, 483089), (51, 426255), (85, 255753), (153, 142085), (157, 138465), (181, 120105), (255, 85251), (471, 46155), (543, 40035), (765, 28417), (785, 27693), (905, 24021), (1413, 15385), (1629, 13345), (2355, 9231), (2669, 8145), (2715, 8007), (3077, 7065)]