64438240

素因数分解:

$2^5\times 5^1\times {\mathrm{402739}}^1$

素因数の和:402754

約数の個数: 24

約数和(自身を含む): 152235720

約数和(自身を除く): 87797480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 402739, 805478, 1610956, 2013695, 3221912, 4027390, 6443824, 8054780, 12887648, 16109560, 32219120, 64438240]

約数ペア:

[(1, 64438240), (2, 32219120), (4, 16109560), (5, 12887648), (8, 8054780), (10, 6443824), (16, 4027390), (20, 3221912), (32, 2013695), (40, 1610956), (80, 805478), (160, 402739)]