72800260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{280001}}^1$

素因数の和:280023

約数の個数: 24

約数和(自身を含む): 164641176

約数和(自身を除く): 91840916

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 280001, 560002, 1120004, 1400005, 2800010, 3640013, 5600020, 7280026, 14560052, 18200065, 36400130, 72800260]

約数ペア:

[(1, 72800260), (2, 36400130), (4, 18200065), (5, 14560052), (10, 7280026), (13, 5600020), (20, 3640013), (26, 2800010), (52, 1400005), (65, 1120004), (130, 560002), (260, 280001)]