20392280

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9619}}^1$

素因数の和:9683

約数の個数: 32

約数和(自身を含む): 46753200

約数和(自身を除く): 26360920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9619, 19238, 38476, 48095, 76952, 96190, 192380, 384760, 509807, 1019614, 2039228, 2549035, 4078456, 5098070, 10196140, 20392280]

約数ペア:

[(1, 20392280), (2, 10196140), (4, 5098070), (5, 4078456), (8, 2549035), (10, 2039228), (20, 1019614), (40, 509807), (53, 384760), (106, 192380), (212, 96190), (265, 76952), (424, 48095), (530, 38476), (1060, 19238), (2120, 9619)]