21858135

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{569}}^1$

素因数の和:787

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 16062825

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 197, 569, 591, 985, 1707, 2561, 2845, 2955, 7397, 7683, 8535, 12805, 22191, 36985, 38415, 110955, 112093, 336279, 560465, 1457209, 1681395, 4371627, 7286045, 21858135]

約数ペア:

[(1, 21858135), (3, 7286045), (5, 4371627), (13, 1681395), (15, 1457209), (39, 560465), (65, 336279), (195, 112093), (197, 110955), (569, 38415), (591, 36985), (985, 22191), (1707, 12805), (2561, 8535), (2845, 7683), (2955, 7397)]