21776220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{389}}^1$

素因数の和:715

約数の個数: 72

約数和(自身を含む): 66437280

約数和(自身を除く): 44661060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 311, 389, 622, 778, 933, 1167, 1244, 1555, 1556, 1866, 1945, 2334, 2799, 3110, 3501, 3732, 3890, 4665, 4668, 5598, 5835, 6220, 7002, 7780, 9330, 11196, 11670, 13995, 14004, 17505, 18660, 23340, 27990, 35010, 55980, 70020, 120979, 241958, 362937, 483916, 604895, 725874, 1088811, 1209790, 1451748, 1814685, 2177622, 2419580, 3629370, 4355244, 5444055, 7258740, 10888110, 21776220]

約数ペア:

[(1, 21776220), (2, 10888110), (3, 7258740), (4, 5444055), (5, 4355244), (6, 3629370), (9, 2419580), (10, 2177622), (12, 1814685), (15, 1451748), (18, 1209790), (20, 1088811), (30, 725874), (36, 604895), (45, 483916), (60, 362937), (90, 241958), (180, 120979), (311, 70020), (389, 55980), (622, 35010), (778, 27990), (933, 23340), (1167, 18660), (1244, 17505), (1555, 14004), (1556, 13995), (1866, 11670), (1945, 11196), (2334, 9330), (2799, 7780), (3110, 7002), (3501, 6220), (3732, 5835), (3890, 5598), (4665, 4668)]