638629672

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{15619}}^1$

素因数の和:15913

約数の個数: 32

約数和(自身を含む): 1265220000

約数和(自身を除く): 626590328

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 269, 538, 1076, 2152, 5111, 10222, 15619, 20444, 31238, 40888, 62476, 124952, 296761, 593522, 1187044, 2374088, 4201511, 8403022, 16806044, 33612088, 79828709, 159657418, 319314836, 638629672]

約数ペア:

[(1, 638629672), (2, 319314836), (4, 159657418), (8, 79828709), (19, 33612088), (38, 16806044), (76, 8403022), (152, 4201511), (269, 2374088), (538, 1187044), (1076, 593522), (2152, 296761), (5111, 124952), (10222, 62476), (15619, 40888), (20444, 31238)]