19581958

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:312

約数の個数: 32

約数和(自身を含む): 33086880

約数和(自身を除く): 13504922

約数列:

[1, 2, 11, 22, 73, 89, 137, 146, 178, 274, 803, 979, 1507, 1606, 1958, 3014, 6497, 10001, 12193, 12994, 20002, 24386, 71467, 110011, 134123, 142934, 220022, 268246, 890089, 1780178, 9790979, 19581958]

約数ペア:

[(1, 19581958), (2, 9790979), (11, 1780178), (22, 890089), (73, 268246), (89, 220022), (137, 142934), (146, 134123), (178, 110011), (274, 71467), (803, 24386), (979, 20002), (1507, 12994), (1606, 12193), (1958, 10001), (3014, 6497)]