31480240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{431}}^1$

素因数の和:538

約数の個数: 80

約数和(自身を含む): 80994816

約数和(自身を除く): 49514576

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 83, 88, 110, 166, 176, 220, 332, 415, 431, 440, 664, 830, 862, 880, 913, 1328, 1660, 1724, 1826, 2155, 3320, 3448, 3652, 4310, 4565, 4741, 6640, 6896, 7304, 8620, 9130, 9482, 14608, 17240, 18260, 18964, 23705, 34480, 35773, 36520, 37928, 47410, 71546, 73040, 75856, 94820, 143092, 178865, 189640, 286184, 357730, 379280, 393503, 572368, 715460, 787006, 1430920, 1574012, 1967515, 2861840, 3148024, 3935030, 6296048, 7870060, 15740120, 31480240]

約数ペア:

[(1, 31480240), (2, 15740120), (4, 7870060), (5, 6296048), (8, 3935030), (10, 3148024), (11, 2861840), (16, 1967515), (20, 1574012), (22, 1430920), (40, 787006), (44, 715460), (55, 572368), (80, 393503), (83, 379280), (88, 357730), (110, 286184), (166, 189640), (176, 178865), (220, 143092), (332, 94820), (415, 75856), (431, 73040), (440, 71546), (664, 47410), (830, 37928), (862, 36520), (880, 35773), (913, 34480), (1328, 23705), (1660, 18964), (1724, 18260), (1826, 17240), (2155, 14608), (3320, 9482), (3448, 9130), (3652, 8620), (4310, 7304), (4565, 6896), (4741, 6640)]