31141760

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:248

約数の個数: 128

約数和(自身を含む): 84823200

約数和(自身を除く): 53681440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 32, 38, 40, 52, 64, 65, 76, 80, 95, 104, 128, 130, 152, 160, 190, 197, 208, 247, 260, 304, 320, 380, 394, 416, 494, 520, 608, 640, 760, 788, 832, 985, 988, 1040, 1216, 1235, 1520, 1576, 1664, 1970, 1976, 2080, 2432, 2470, 2561, 3040, 3152, 3743, 3940, 3952, 4160, 4940, 5122, 6080, 6304, 7486, 7880, 7904, 8320, 9880, 10244, 12160, 12608, 12805, 14972, 15760, 15808, 18715, 19760, 20488, 25216, 25610, 29944, 31520, 31616, 37430, 39520, 40976, 48659, 51220, 59888, 63040, 74860, 79040, 81952, 97318, 102440, 119776, 126080, 149720, 158080, 163904, 194636, 204880, 239552, 243295, 299440, 327808, 389272, 409760, 479104, 486590, 598880, 778544, 819520, 973180, 1197760, 1557088, 1639040, 1946360, 2395520, 3114176, 3892720, 6228352, 7785440, 15570880, 31141760]

約数ペア:

[(1, 31141760), (2, 15570880), (4, 7785440), (5, 6228352), (8, 3892720), (10, 3114176), (13, 2395520), (16, 1946360), (19, 1639040), (20, 1557088), (26, 1197760), (32, 973180), (38, 819520), (40, 778544), (52, 598880), (64, 486590), (65, 479104), (76, 409760), (80, 389272), (95, 327808), (104, 299440), (128, 243295), (130, 239552), (152, 204880), (160, 194636), (190, 163904), (197, 158080), (208, 149720), (247, 126080), (260, 119776), (304, 102440), (320, 97318), (380, 81952), (394, 79040), (416, 74860), (494, 63040), (520, 59888), (608, 51220), (640, 48659), (760, 40976), (788, 39520), (832, 37430), (985, 31616), (988, 31520), (1040, 29944), (1216, 25610), (1235, 25216), (1520, 20488), (1576, 19760), (1664, 18715), (1970, 15808), (1976, 15760), (2080, 14972), (2432, 12805), (2470, 12608), (2561, 12160), (3040, 10244), (3152, 9880), (3743, 8320), (3940, 7904), (3952, 7880), (4160, 7486), (4940, 6304), (5122, 6080)]