21329750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{6563}}^1$

素因数の和:6593

約数の個数: 32

約数和(自身を含む): 43007328

約数和(自身を除く): 21677578

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 650, 1625, 3250, 6563, 13126, 32815, 65630, 85319, 164075, 170638, 328150, 426595, 820375, 853190, 1640750, 2132975, 4265950, 10664875, 21329750]

約数ペア:

[(1, 21329750), (2, 10664875), (5, 4265950), (10, 2132975), (13, 1640750), (25, 853190), (26, 820375), (50, 426595), (65, 328150), (125, 170638), (130, 164075), (250, 85319), (325, 65630), (650, 32815), (1625, 13126), (3250, 6563)]