20879502021

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2111}}^1\times {\mathrm{8263}}^1$

素因数の和:10406

約数の個数: 48

約数和(自身を含む): 36303421440

約数和(自身を除く): 15423919419

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 2111, 6333, 8263, 14777, 18999, 24789, 40109, 44331, 57841, 74367, 120327, 132993, 156997, 173523, 280763, 360981, 470991, 520569, 842289, 1098979, 1412973, 2526867, 3296937, 9890811, 17443193, 52329579, 122102351, 156988737, 331420667, 366307053, 994262001, 1098921159, 2319944669, 2982786003, 6959834007, 20879502021]

約数ペア:

[(1, 20879502021), (3, 6959834007), (7, 2982786003), (9, 2319944669), (19, 1098921159), (21, 994262001), (57, 366307053), (63, 331420667), (133, 156988737), (171, 122102351), (399, 52329579), (1197, 17443193), (2111, 9890811), (6333, 3296937), (8263, 2526867), (14777, 1412973), (18999, 1098979), (24789, 842289), (40109, 520569), (44331, 470991), (57841, 360981), (74367, 280763), (120327, 173523), (132993, 156997)]