20835045

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{859}}^1$

素因数の和:895

約数の個数: 72

約数和(自身を含む): 45882720

約数和(自身を除く): 25047675

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 49, 55, 63, 77, 99, 105, 147, 165, 231, 245, 315, 385, 441, 495, 539, 693, 735, 859, 1155, 1617, 2205, 2577, 2695, 3465, 4295, 4851, 6013, 7731, 8085, 9449, 12885, 18039, 24255, 28347, 30065, 38655, 42091, 47245, 54117, 66143, 85041, 90195, 126273, 141735, 198429, 210455, 270585, 330715, 378819, 425205, 463001, 595287, 631365, 992145, 1389003, 1894095, 2315005, 2976435, 4167009, 6945015, 20835045]

約数ペア:

[(1, 20835045), (3, 6945015), (5, 4167009), (7, 2976435), (9, 2315005), (11, 1894095), (15, 1389003), (21, 992145), (33, 631365), (35, 595287), (45, 463001), (49, 425205), (55, 378819), (63, 330715), (77, 270585), (99, 210455), (105, 198429), (147, 141735), (165, 126273), (231, 90195), (245, 85041), (315, 66143), (385, 54117), (441, 47245), (495, 42091), (539, 38655), (693, 30065), (735, 28347), (859, 24255), (1155, 18039), (1617, 12885), (2205, 9449), (2577, 8085), (2695, 7731), (3465, 6013), (4295, 4851)]