21131658

素因数分解:

$2^1\times 3^3\times {\mathrm{491}}^1\times {\mathrm{797}}^1$

素因数の和:1299

約数の個数: 32

約数和(自身を含む): 47113920

約数和(自身を除く): 25982262

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 491, 797, 982, 1473, 1594, 2391, 2946, 4419, 4782, 7173, 8838, 13257, 14346, 21519, 26514, 43038, 391327, 782654, 1173981, 2347962, 3521943, 7043886, 10565829, 21131658]

約数ペア:

[(1, 21131658), (2, 10565829), (3, 7043886), (6, 3521943), (9, 2347962), (18, 1173981), (27, 782654), (54, 391327), (491, 43038), (797, 26514), (982, 21519), (1473, 14346), (1594, 13257), (2391, 8838), (2946, 7173), (4419, 4782)]