21510072

素因数分解:

$2^3\times 3^2\times {\mathrm{179}}^1\times {\mathrm{1669}}^1$

素因数の和:1860

約数の個数: 48

約数和(自身を含む): 58617000

約数和(自身を除く): 37106928

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 179, 358, 537, 716, 1074, 1432, 1611, 1669, 2148, 3222, 3338, 4296, 5007, 6444, 6676, 10014, 12888, 13352, 15021, 20028, 30042, 40056, 60084, 120168, 298751, 597502, 896253, 1195004, 1792506, 2390008, 2688759, 3585012, 5377518, 7170024, 10755036, 21510072]

約数ペア:

[(1, 21510072), (2, 10755036), (3, 7170024), (4, 5377518), (6, 3585012), (8, 2688759), (9, 2390008), (12, 1792506), (18, 1195004), (24, 896253), (36, 597502), (72, 298751), (179, 120168), (358, 60084), (537, 40056), (716, 30042), (1074, 20028), (1432, 15021), (1611, 13352), (1669, 12888), (2148, 10014), (3222, 6676), (3338, 6444), (4296, 5007)]