20921687584

素因数分解:

$2^5\times 7^2\times {\mathrm{1721}}^1\times {\mathrm{7753}}^1$

素因数の和:9498

約数の個数: 72

約数和(自身を含む): 47948425308

約数和(自身を除く): 27026737724

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 392, 784, 1568, 1721, 3442, 6884, 7753, 12047, 13768, 15506, 24094, 27536, 31012, 48188, 54271, 55072, 62024, 84329, 96376, 108542, 124048, 168658, 192752, 217084, 248096, 337316, 379897, 385504, 434168, 674632, 759794, 868336, 1349264, 1519588, 1736672, 2698528, 3039176, 6078352, 12156704, 13342913, 26685826, 53371652, 93400391, 106743304, 186800782, 213486608, 373601564, 426973216, 653802737, 747203128, 1307605474, 1494406256, 2615210948, 2988812512, 5230421896, 10460843792, 20921687584]

約数ペア:

[(1, 20921687584), (2, 10460843792), (4, 5230421896), (7, 2988812512), (8, 2615210948), (14, 1494406256), (16, 1307605474), (28, 747203128), (32, 653802737), (49, 426973216), (56, 373601564), (98, 213486608), (112, 186800782), (196, 106743304), (224, 93400391), (392, 53371652), (784, 26685826), (1568, 13342913), (1721, 12156704), (3442, 6078352), (6884, 3039176), (7753, 2698528), (12047, 1736672), (13768, 1519588), (15506, 1349264), (24094, 868336), (27536, 759794), (31012, 674632), (48188, 434168), (54271, 385504), (55072, 379897), (62024, 337316), (84329, 248096), (96376, 217084), (108542, 192752), (124048, 168658)]