21294861

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4673}}^1$

素因数の和:4721

約数の個数: 24

約数和(自身を含む): 34101504

約数和(自身を除く): 12806643

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4557, 4673, 14019, 32711, 98133, 144863, 228977, 434589, 686931, 1014041, 3042123, 7098287, 21294861]

約数ペア:

[(1, 21294861), (3, 7098287), (7, 3042123), (21, 1014041), (31, 686931), (49, 434589), (93, 228977), (147, 144863), (217, 98133), (651, 32711), (1519, 14019), (4557, 4673)]