645885248

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{1297}}^1$

素因数の和:1591

約数の個数: 56

約数和(自身を含む): 1329318144

約数和(自身を除く): 683432896

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 251, 496, 502, 992, 1004, 1297, 1984, 2008, 2594, 4016, 5188, 7781, 8032, 10376, 15562, 16064, 20752, 31124, 40207, 41504, 62248, 80414, 83008, 124496, 160828, 248992, 321656, 325547, 497984, 643312, 651094, 1286624, 1302188, 2573248, 2604376, 5208752, 10091957, 10417504, 20183914, 20835008, 40367828, 80735656, 161471312, 322942624, 645885248]

約数ペア:

[(1, 645885248), (2, 322942624), (4, 161471312), (8, 80735656), (16, 40367828), (31, 20835008), (32, 20183914), (62, 10417504), (64, 10091957), (124, 5208752), (248, 2604376), (251, 2573248), (496, 1302188), (502, 1286624), (992, 651094), (1004, 643312), (1297, 497984), (1984, 325547), (2008, 321656), (2594, 248992), (4016, 160828), (5188, 124496), (7781, 83008), (8032, 80414), (10376, 62248), (15562, 41504), (16064, 40207), (20752, 31124)]