20819360

素因数分解:

$2^5\times 5^1\times {\mathrm{130121}}^1$

素因数の和:130136

約数の個数: 24

約数和(自身を含む): 49186116

約数和(自身を除く): 28366756

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130121, 260242, 520484, 650605, 1040968, 1301210, 2081936, 2602420, 4163872, 5204840, 10409680, 20819360]

約数ペア:

[(1, 20819360), (2, 10409680), (4, 5204840), (5, 4163872), (8, 2602420), (10, 2081936), (16, 1301210), (20, 1040968), (32, 650605), (40, 520484), (80, 260242), (160, 130121)]