21275964

素因数分解:

$2^2\times 3^2\times {\mathrm{79}}^1\times {\mathrm{7481}}^1$

素因数の和:7570

約数の個数: 36

約数和(自身を含む): 54468960

約数和(自身を除く): 33192996

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 79, 158, 237, 316, 474, 711, 948, 1422, 2844, 7481, 14962, 22443, 29924, 44886, 67329, 89772, 134658, 269316, 590999, 1181998, 1772997, 2363996, 3545994, 5318991, 7091988, 10637982, 21275964]

約数ペア:

[(1, 21275964), (2, 10637982), (3, 7091988), (4, 5318991), (6, 3545994), (9, 2363996), (12, 1772997), (18, 1181998), (36, 590999), (79, 269316), (158, 134658), (237, 89772), (316, 67329), (474, 44886), (711, 29924), (948, 22443), (1422, 14962), (2844, 7481)]