21939995

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1163}}^1$

素因数の和:1200

約数の個数: 32

約数和(自身を含む): 33523200

約数和(自身を除く): 11583205

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 343, 385, 539, 1163, 1715, 2695, 3773, 5815, 8141, 12793, 18865, 40705, 56987, 63965, 89551, 284935, 398909, 447755, 626857, 1994545, 3134285, 4387999, 21939995]

約数ペア:

[(1, 21939995), (5, 4387999), (7, 3134285), (11, 1994545), (35, 626857), (49, 447755), (55, 398909), (77, 284935), (245, 89551), (343, 63965), (385, 56987), (539, 40705), (1163, 18865), (1715, 12793), (2695, 8141), (3773, 5815)]