21665808

素因数分解:

$2^4\times 3^2\times {\mathrm{43}}^1\times {\mathrm{3499}}^1$

素因数の和:3556

約数の個数: 60

約数和(自身を含む): 62062000

約数和(自身を除く): 40396192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 43, 48, 72, 86, 129, 144, 172, 258, 344, 387, 516, 688, 774, 1032, 1548, 2064, 3096, 3499, 6192, 6998, 10497, 13996, 20994, 27992, 31491, 41988, 55984, 62982, 83976, 125964, 150457, 167952, 251928, 300914, 451371, 503856, 601828, 902742, 1203656, 1354113, 1805484, 2407312, 2708226, 3610968, 5416452, 7221936, 10832904, 21665808]

約数ペア:

[(1, 21665808), (2, 10832904), (3, 7221936), (4, 5416452), (6, 3610968), (8, 2708226), (9, 2407312), (12, 1805484), (16, 1354113), (18, 1203656), (24, 902742), (36, 601828), (43, 503856), (48, 451371), (72, 300914), (86, 251928), (129, 167952), (144, 150457), (172, 125964), (258, 83976), (344, 62982), (387, 55984), (516, 41988), (688, 31491), (774, 27992), (1032, 20994), (1548, 13996), (2064, 10497), (3096, 6998), (3499, 6192)]