128758840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:305

約数の個数: 128

約数和(自身を含む): 348105600

約数和(自身を除く): 219346760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 101, 116, 140, 145, 157, 202, 203, 232, 280, 290, 314, 404, 406, 505, 580, 628, 707, 785, 808, 812, 1010, 1015, 1099, 1160, 1256, 1414, 1570, 1624, 2020, 2030, 2198, 2828, 2929, 3140, 3535, 4040, 4060, 4396, 4553, 5495, 5656, 5858, 6280, 7070, 8120, 8792, 9106, 10990, 11716, 14140, 14645, 15857, 18212, 20503, 21980, 22765, 23432, 28280, 29290, 31714, 31871, 36424, 41006, 43960, 45530, 58580, 63428, 63742, 79285, 82012, 91060, 102515, 110999, 117160, 126856, 127484, 158570, 159355, 164024, 182120, 205030, 221998, 254968, 317140, 318710, 410060, 443996, 459853, 554995, 634280, 637420, 820120, 887992, 919706, 1109990, 1274840, 1839412, 2219980, 2299265, 3218971, 3678824, 4439960, 4598530, 6437942, 9197060, 12875884, 16094855, 18394120, 25751768, 32189710, 64379420, 128758840]

約数ペア:

[(1, 128758840), (2, 64379420), (4, 32189710), (5, 25751768), (7, 18394120), (8, 16094855), (10, 12875884), (14, 9197060), (20, 6437942), (28, 4598530), (29, 4439960), (35, 3678824), (40, 3218971), (56, 2299265), (58, 2219980), (70, 1839412), (101, 1274840), (116, 1109990), (140, 919706), (145, 887992), (157, 820120), (202, 637420), (203, 634280), (232, 554995), (280, 459853), (290, 443996), (314, 410060), (404, 318710), (406, 317140), (505, 254968), (580, 221998), (628, 205030), (707, 182120), (785, 164024), (808, 159355), (812, 158570), (1010, 127484), (1015, 126856), (1099, 117160), (1160, 110999), (1256, 102515), (1414, 91060), (1570, 82012), (1624, 79285), (2020, 63742), (2030, 63428), (2198, 58580), (2828, 45530), (2929, 43960), (3140, 41006), (3535, 36424), (4040, 31871), (4060, 31714), (4396, 29290), (4553, 28280), (5495, 23432), (5656, 22765), (5858, 21980), (6280, 20503), (7070, 18212), (8120, 15857), (8792, 14645), (9106, 14140), (10990, 11716)]