644495744

素因数分解:

$2^7\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:691

約数の個数: 64

約数和(自身を含む): 1314759600

約数和(自身を除く): 670263856

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 128, 197, 244, 394, 419, 488, 788, 838, 976, 1576, 1676, 1952, 3152, 3352, 3904, 6304, 6704, 7808, 12017, 12608, 13408, 24034, 25216, 25559, 26816, 48068, 51118, 53632, 82543, 96136, 102236, 165086, 192272, 204472, 330172, 384544, 408944, 660344, 769088, 817888, 1320688, 1538176, 1635776, 2641376, 3271552, 5035123, 5282752, 10070246, 10565504, 20140492, 40280984, 80561968, 161123936, 322247872, 644495744]

約数ペア:

[(1, 644495744), (2, 322247872), (4, 161123936), (8, 80561968), (16, 40280984), (32, 20140492), (61, 10565504), (64, 10070246), (122, 5282752), (128, 5035123), (197, 3271552), (244, 2641376), (394, 1635776), (419, 1538176), (488, 1320688), (788, 817888), (838, 769088), (976, 660344), (1576, 408944), (1676, 384544), (1952, 330172), (3152, 204472), (3352, 192272), (3904, 165086), (6304, 102236), (6704, 96136), (7808, 82543), (12017, 53632), (12608, 51118), (13408, 48068), (24034, 26816), (25216, 25559)]