661624576

素因数分解:

$2^8\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{409}}^1$

素因数の和:585

約数の個数: 72

約数和(自身を含む): 1357624800

約数和(自身を除く): 696000224

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 89, 128, 142, 178, 256, 284, 356, 409, 568, 712, 818, 1136, 1424, 1636, 2272, 2848, 3272, 4544, 5696, 6319, 6544, 9088, 11392, 12638, 13088, 18176, 22784, 25276, 26176, 29039, 36401, 50552, 52352, 58078, 72802, 101104, 104704, 116156, 145604, 202208, 232312, 291208, 404416, 464624, 582416, 808832, 929248, 1164832, 1617664, 1858496, 2329664, 2584471, 3716992, 4659328, 5168942, 7433984, 9318656, 10337884, 20675768, 41351536, 82703072, 165406144, 330812288, 661624576]

約数ペア:

[(1, 661624576), (2, 330812288), (4, 165406144), (8, 82703072), (16, 41351536), (32, 20675768), (64, 10337884), (71, 9318656), (89, 7433984), (128, 5168942), (142, 4659328), (178, 3716992), (256, 2584471), (284, 2329664), (356, 1858496), (409, 1617664), (568, 1164832), (712, 929248), (818, 808832), (1136, 582416), (1424, 464624), (1636, 404416), (2272, 291208), (2848, 232312), (3272, 202208), (4544, 145604), (5696, 116156), (6319, 104704), (6544, 101104), (9088, 72802), (11392, 58078), (12638, 52352), (13088, 50552), (18176, 36401), (22784, 29039), (25276, 26176)]