20673345

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2557}}^1$

素因数の和:2590

約数の個数: 48

約数和(自身を含む): 41992128

約数和(自身を除く): 21318783

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2557, 2695, 7671, 8085, 12785, 17899, 28127, 38355, 53697, 84381, 89495, 125293, 140635, 196889, 268485, 375879, 421905, 590667, 626465, 984445, 1378223, 1879395, 2953335, 4134669, 6891115, 20673345]

約数ペア:

[(1, 20673345), (3, 6891115), (5, 4134669), (7, 2953335), (11, 1879395), (15, 1378223), (21, 984445), (33, 626465), (35, 590667), (49, 421905), (55, 375879), (77, 268485), (105, 196889), (147, 140635), (165, 125293), (231, 89495), (245, 84381), (385, 53697), (539, 38355), (735, 28127), (1155, 17899), (1617, 12785), (2557, 8085), (2695, 7671)]