21007090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{571}}^1$

素因数の和:874

約数の個数: 32

約数和(自身を含む): 40936896

約数和(自身を除く): 19929806

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 283, 566, 571, 1142, 1415, 2830, 2855, 3679, 5710, 7358, 7423, 14846, 18395, 36790, 37115, 74230, 161593, 323186, 807965, 1615930, 2100709, 4201418, 10503545, 21007090]

約数ペア:

[(1, 21007090), (2, 10503545), (5, 4201418), (10, 2100709), (13, 1615930), (26, 807965), (65, 323186), (130, 161593), (283, 74230), (566, 37115), (571, 36790), (1142, 18395), (1415, 14846), (2830, 7423), (2855, 7358), (3679, 5710)]