664834555

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{647}}^1$

素因数の和:844

約数の個数: 64

約数和(自身を含む): 1061517312

約数和(自身を除く): 396682757

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 157, 187, 385, 595, 647, 785, 935, 1099, 1309, 1727, 2669, 3235, 4529, 5495, 6545, 7117, 8635, 10999, 12089, 13345, 18683, 22645, 29359, 35585, 49819, 54995, 60445, 76993, 93415, 101579, 120989, 146795, 205513, 249095, 384965, 507895, 604945, 711053, 846923, 1027565, 1117369, 1726843, 3555265, 4234615, 5586845, 7821583, 8634215, 12087901, 18995273, 39107915, 60439505, 94976365, 132966911, 664834555]

約数ペア:

[(1, 664834555), (5, 132966911), (7, 94976365), (11, 60439505), (17, 39107915), (35, 18995273), (55, 12087901), (77, 8634215), (85, 7821583), (119, 5586845), (157, 4234615), (187, 3555265), (385, 1726843), (595, 1117369), (647, 1027565), (785, 846923), (935, 711053), (1099, 604945), (1309, 507895), (1727, 384965), (2669, 249095), (3235, 205513), (4529, 146795), (5495, 120989), (6545, 101579), (7117, 93415), (8635, 76993), (10999, 60445), (12089, 54995), (13345, 49819), (18683, 35585), (22645, 29359)]