20740720128

素因数分解:

$2^9\times 3^1\times {\mathrm{31}}^1\times {\mathrm{435583}}^1$

素因数の和:435635

約数の個数: 80

約数和(自身を含む): 57037111296

約数和(自身を除く): 36296391168

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 31, 32, 48, 62, 64, 93, 96, 124, 128, 186, 192, 248, 256, 372, 384, 496, 512, 744, 768, 992, 1488, 1536, 1984, 2976, 3968, 5952, 7936, 11904, 15872, 23808, 47616, 435583, 871166, 1306749, 1742332, 2613498, 3484664, 5226996, 6969328, 10453992, 13503073, 13938656, 20907984, 27006146, 27877312, 40509219, 41815968, 54012292, 55754624, 81018438, 83631936, 108024584, 111509248, 162036876, 167263872, 216049168, 223018496, 324073752, 334527744, 432098336, 648147504, 669055488, 864196672, 1296295008, 1728393344, 2592590016, 3456786688, 5185180032, 6913573376, 10370360064, 20740720128]

約数ペア:

[(1, 20740720128), (2, 10370360064), (3, 6913573376), (4, 5185180032), (6, 3456786688), (8, 2592590016), (12, 1728393344), (16, 1296295008), (24, 864196672), (31, 669055488), (32, 648147504), (48, 432098336), (62, 334527744), (64, 324073752), (93, 223018496), (96, 216049168), (124, 167263872), (128, 162036876), (186, 111509248), (192, 108024584), (248, 83631936), (256, 81018438), (372, 55754624), (384, 54012292), (496, 41815968), (512, 40509219), (744, 27877312), (768, 27006146), (992, 20907984), (1488, 13938656), (1536, 13503073), (1984, 10453992), (2976, 6969328), (3968, 5226996), (5952, 3484664), (7936, 2613498), (11904, 1742332), (15872, 1306749), (23808, 871166), (47616, 435583)]