21436884

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{331}}^1$

素因数の和:605

約数の個数: 72

約数和(自身を含む): 62357568

約数和(自身を除く): 40920684

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 257, 331, 514, 662, 771, 993, 1028, 1324, 1542, 1799, 1986, 2313, 2317, 2979, 3084, 3598, 3972, 4626, 4634, 5397, 5958, 6951, 7196, 9252, 9268, 10794, 11916, 13902, 16191, 20853, 21588, 27804, 32382, 41706, 64764, 83412, 85067, 170134, 255201, 340268, 510402, 595469, 765603, 1020804, 1190938, 1531206, 1786407, 2381876, 3062412, 3572814, 5359221, 7145628, 10718442, 21436884]

約数ペア:

[(1, 21436884), (2, 10718442), (3, 7145628), (4, 5359221), (6, 3572814), (7, 3062412), (9, 2381876), (12, 1786407), (14, 1531206), (18, 1190938), (21, 1020804), (28, 765603), (36, 595469), (42, 510402), (63, 340268), (84, 255201), (126, 170134), (252, 85067), (257, 83412), (331, 64764), (514, 41706), (662, 32382), (771, 27804), (993, 21588), (1028, 20853), (1324, 16191), (1542, 13902), (1799, 11916), (1986, 10794), (2313, 9268), (2317, 9252), (2979, 7196), (3084, 6951), (3598, 5958), (3972, 5397), (4626, 4634)]