21407280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{467}}^1$

素因数の和:674

約数の個数: 80

約数和(自身を含む): 66852864

約数和(自身を除く): 45445584

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 191, 240, 382, 467, 573, 764, 934, 955, 1146, 1401, 1528, 1868, 1910, 2292, 2335, 2802, 2865, 3056, 3736, 3820, 4584, 4670, 5604, 5730, 7005, 7472, 7640, 9168, 9340, 11208, 11460, 14010, 15280, 18680, 22416, 22920, 28020, 37360, 45840, 56040, 89197, 112080, 178394, 267591, 356788, 445985, 535182, 713576, 891970, 1070364, 1337955, 1427152, 1783940, 2140728, 2675910, 3567880, 4281456, 5351820, 7135760, 10703640, 21407280]

約数ペア:

[(1, 21407280), (2, 10703640), (3, 7135760), (4, 5351820), (5, 4281456), (6, 3567880), (8, 2675910), (10, 2140728), (12, 1783940), (15, 1427152), (16, 1337955), (20, 1070364), (24, 891970), (30, 713576), (40, 535182), (48, 445985), (60, 356788), (80, 267591), (120, 178394), (191, 112080), (240, 89197), (382, 56040), (467, 45840), (573, 37360), (764, 28020), (934, 22920), (955, 22416), (1146, 18680), (1401, 15280), (1528, 14010), (1868, 11460), (1910, 11208), (2292, 9340), (2335, 9168), (2802, 7640), (2865, 7472), (3056, 7005), (3736, 5730), (3820, 5604), (4584, 4670)]