72017221840

素因数分解:

$2^4\times 5^1\times {\mathrm{900215273}}^1$

素因数の和:900215286

約数の個数: 20

約数和(自身を含む): 167440040964

約数和(自身を除く): 95422819124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 900215273, 1800430546, 3600861092, 4501076365, 7201722184, 9002152730, 14403444368, 18004305460, 36008610920, 72017221840]

約数ペア:

[(1, 72017221840), (2, 36008610920), (4, 18004305460), (5, 14403444368), (8, 9002152730), (10, 7201722184), (16, 4501076365), (20, 3600861092), (40, 1800430546), (80, 900215273)]