31440720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{487}}^1$

素因数の和:772

約数の個数: 80

約数和(自身を含む): 98029440

約数和(自身を除く): 66588720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 269, 487, 538, 807, 974, 1076, 1345, 1461, 1614, 1948, 2152, 2435, 2690, 2922, 3228, 3896, 4035, 4304, 4870, 5380, 5844, 6456, 7305, 7792, 8070, 9740, 10760, 11688, 12912, 14610, 16140, 19480, 21520, 23376, 29220, 32280, 38960, 58440, 64560, 116880, 131003, 262006, 393009, 524012, 655015, 786018, 1048024, 1310030, 1572036, 1965045, 2096048, 2620060, 3144072, 3930090, 5240120, 6288144, 7860180, 10480240, 15720360, 31440720]

約数ペア:

[(1, 31440720), (2, 15720360), (3, 10480240), (4, 7860180), (5, 6288144), (6, 5240120), (8, 3930090), (10, 3144072), (12, 2620060), (15, 2096048), (16, 1965045), (20, 1572036), (24, 1310030), (30, 1048024), (40, 786018), (48, 655015), (60, 524012), (80, 393009), (120, 262006), (240, 131003), (269, 116880), (487, 64560), (538, 58440), (807, 38960), (974, 32280), (1076, 29220), (1345, 23376), (1461, 21520), (1614, 19480), (1948, 16140), (2152, 14610), (2435, 12912), (2690, 11688), (2922, 10760), (3228, 9740), (3896, 8070), (4035, 7792), (4304, 7305), (4870, 6456), (5380, 5844)]