21239880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{673}}^1$

素因数の和:950

約数の個数: 64

約数和(自身を含む): 64056960

約数和(自身を除く): 42817080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 263, 526, 673, 789, 1052, 1315, 1346, 1578, 2019, 2104, 2630, 2692, 3156, 3365, 3945, 4038, 5260, 5384, 6312, 6730, 7890, 8076, 10095, 10520, 13460, 15780, 16152, 20190, 26920, 31560, 40380, 80760, 176999, 353998, 530997, 707996, 884995, 1061994, 1415992, 1769990, 2123988, 2654985, 3539980, 4247976, 5309970, 7079960, 10619940, 21239880]

約数ペア:

[(1, 21239880), (2, 10619940), (3, 7079960), (4, 5309970), (5, 4247976), (6, 3539980), (8, 2654985), (10, 2123988), (12, 1769990), (15, 1415992), (20, 1061994), (24, 884995), (30, 707996), (40, 530997), (60, 353998), (120, 176999), (263, 80760), (526, 40380), (673, 31560), (789, 26920), (1052, 20190), (1315, 16152), (1346, 15780), (1578, 13460), (2019, 10520), (2104, 10095), (2630, 8076), (2692, 7890), (3156, 6730), (3365, 6312), (3945, 5384), (4038, 5260)]