638564992

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{383753}}^1$

素因数の和:383780

約数の個数: 32

約数和(自身を含む): 1370001780

約数和(自身を除く): 731436788

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 416, 832, 1664, 383753, 767506, 1535012, 3070024, 4988789, 6140048, 9977578, 12280096, 19955156, 24560192, 39910312, 49120384, 79820624, 159641248, 319282496, 638564992]

約数ペア:

[(1, 638564992), (2, 319282496), (4, 159641248), (8, 79820624), (13, 49120384), (16, 39910312), (26, 24560192), (32, 19955156), (52, 12280096), (64, 9977578), (104, 6140048), (128, 4988789), (208, 3070024), (416, 1535012), (832, 767506), (1664, 383753)]