643062976

素因数分解:

$2^6\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{1297}}^1$

素因数の和:1497

約数の個数: 56

約数和(自身を含む): 1308217856

約数和(自身を除く): 665154880

約数列:

[1, 2, 4, 8, 16, 32, 61, 64, 122, 127, 244, 254, 488, 508, 976, 1016, 1297, 1952, 2032, 2594, 3904, 4064, 5188, 7747, 8128, 10376, 15494, 20752, 30988, 41504, 61976, 79117, 83008, 123952, 158234, 164719, 247904, 316468, 329438, 495808, 632936, 658876, 1265872, 1317752, 2531744, 2635504, 5063488, 5271008, 10047859, 10542016, 20095718, 40191436, 80382872, 160765744, 321531488, 643062976]

約数ペア:

[(1, 643062976), (2, 321531488), (4, 160765744), (8, 80382872), (16, 40191436), (32, 20095718), (61, 10542016), (64, 10047859), (122, 5271008), (127, 5063488), (244, 2635504), (254, 2531744), (488, 1317752), (508, 1265872), (976, 658876), (1016, 632936), (1297, 495808), (1952, 329438), (2032, 316468), (2594, 247904), (3904, 164719), (4064, 158234), (5188, 123952), (7747, 83008), (8128, 79117), (10376, 61976), (15494, 41504), (20752, 30988)]