21332760

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{457}}^1$

素因数の和:860

約数の個数: 64

約数和(自身を含む): 64303200

約数和(自身を除く): 42970440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 389, 457, 778, 914, 1167, 1371, 1556, 1828, 1945, 2285, 2334, 2742, 3112, 3656, 3890, 4570, 4668, 5484, 5835, 6855, 7780, 9140, 9336, 10968, 11670, 13710, 15560, 18280, 23340, 27420, 46680, 54840, 177773, 355546, 533319, 711092, 888865, 1066638, 1422184, 1777730, 2133276, 2666595, 3555460, 4266552, 5333190, 7110920, 10666380, 21332760]

約数ペア:

[(1, 21332760), (2, 10666380), (3, 7110920), (4, 5333190), (5, 4266552), (6, 3555460), (8, 2666595), (10, 2133276), (12, 1777730), (15, 1422184), (20, 1066638), (24, 888865), (30, 711092), (40, 533319), (60, 355546), (120, 177773), (389, 54840), (457, 46680), (778, 27420), (914, 23340), (1167, 18280), (1371, 15560), (1556, 13710), (1828, 11670), (1945, 10968), (2285, 9336), (2334, 9140), (2742, 7780), (3112, 6855), (3656, 5835), (3890, 5484), (4570, 4668)]