21382740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{563}}^1$

素因数の和:789

約数の個数: 72

約数和(自身を含む): 65284128

約数和(自身を除く): 43901388

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 211, 422, 563, 633, 844, 1055, 1126, 1266, 1689, 1899, 2110, 2252, 2532, 2815, 3165, 3378, 3798, 4220, 5067, 5630, 6330, 6756, 7596, 8445, 9495, 10134, 11260, 12660, 16890, 18990, 20268, 25335, 33780, 37980, 50670, 101340, 118793, 237586, 356379, 475172, 593965, 712758, 1069137, 1187930, 1425516, 1781895, 2138274, 2375860, 3563790, 4276548, 5345685, 7127580, 10691370, 21382740]

約数ペア:

[(1, 21382740), (2, 10691370), (3, 7127580), (4, 5345685), (5, 4276548), (6, 3563790), (9, 2375860), (10, 2138274), (12, 1781895), (15, 1425516), (18, 1187930), (20, 1069137), (30, 712758), (36, 593965), (45, 475172), (60, 356379), (90, 237586), (180, 118793), (211, 101340), (422, 50670), (563, 37980), (633, 33780), (844, 25335), (1055, 20268), (1126, 18990), (1266, 16890), (1689, 12660), (1899, 11260), (2110, 10134), (2252, 9495), (2532, 8445), (2815, 7596), (3165, 6756), (3378, 6330), (3798, 5630), (4220, 5067)]