639239008

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{327479}}^1$

素因数の和:327550

約数の個数: 24

約数和(自身を含む): 1279136880

約数和(自身を除く): 639897872

約数列:

[1, 2, 4, 8, 16, 32, 61, 122, 244, 488, 976, 1952, 327479, 654958, 1309916, 2619832, 5239664, 10479328, 19976219, 39952438, 79904876, 159809752, 319619504, 639239008]

約数ペア:

[(1, 639239008), (2, 319619504), (4, 159809752), (8, 79904876), (16, 39952438), (32, 19976219), (61, 10479328), (122, 5239664), (244, 2619832), (488, 1309916), (976, 654958), (1952, 327479)]