21840720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{8273}}^1$

素因数の和:8300

約数の個数: 80

約数和(自身を含む): 73870272

約数和(自身を除く): 52029552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 44, 48, 55, 60, 66, 80, 88, 110, 120, 132, 165, 176, 220, 240, 264, 330, 440, 528, 660, 880, 1320, 2640, 8273, 16546, 24819, 33092, 41365, 49638, 66184, 82730, 91003, 99276, 124095, 132368, 165460, 182006, 198552, 248190, 273009, 330920, 364012, 397104, 455015, 496380, 546018, 661840, 728024, 910030, 992760, 1092036, 1365045, 1456048, 1820060, 1985520, 2184072, 2730090, 3640120, 4368144, 5460180, 7280240, 10920360, 21840720]

約数ペア:

[(1, 21840720), (2, 10920360), (3, 7280240), (4, 5460180), (5, 4368144), (6, 3640120), (8, 2730090), (10, 2184072), (11, 1985520), (12, 1820060), (15, 1456048), (16, 1365045), (20, 1092036), (22, 992760), (24, 910030), (30, 728024), (33, 661840), (40, 546018), (44, 496380), (48, 455015), (55, 397104), (60, 364012), (66, 330920), (80, 273009), (88, 248190), (110, 198552), (120, 182006), (132, 165460), (165, 132368), (176, 124095), (220, 99276), (240, 91003), (264, 82730), (330, 66184), (440, 49638), (528, 41365), (660, 33092), (880, 24819), (1320, 16546), (2640, 8273)]