81413820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1669}}^1$

素因数の和:1955

約数の個数: 72

約数和(自身を含む): 248015040

約数和(自身を除く): 166601220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 271, 542, 813, 1084, 1355, 1626, 1669, 2439, 2710, 3252, 3338, 4065, 4878, 5007, 5420, 6676, 8130, 8345, 9756, 10014, 12195, 15021, 16260, 16690, 20028, 24390, 25035, 30042, 33380, 48780, 50070, 60084, 75105, 100140, 150210, 300420, 452299, 904598, 1356897, 1809196, 2261495, 2713794, 4070691, 4522990, 5427588, 6784485, 8141382, 9045980, 13568970, 16282764, 20353455, 27137940, 40706910, 81413820]

約数ペア:

[(1, 81413820), (2, 40706910), (3, 27137940), (4, 20353455), (5, 16282764), (6, 13568970), (9, 9045980), (10, 8141382), (12, 6784485), (15, 5427588), (18, 4522990), (20, 4070691), (30, 2713794), (36, 2261495), (45, 1809196), (60, 1356897), (90, 904598), (180, 452299), (271, 300420), (542, 150210), (813, 100140), (1084, 75105), (1355, 60084), (1626, 50070), (1669, 48780), (2439, 33380), (2710, 30042), (3252, 25035), (3338, 24390), (4065, 20028), (4878, 16690), (5007, 16260), (5420, 15021), (6676, 12195), (8130, 10014), (8345, 9756)]