72721720

素因数分解:

$2^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{8009}}^1$

素因数の和:8247

約数の個数: 32

約数和(自身を含む): 164365200

約数和(自身を除く): 91643480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 227, 454, 908, 1135, 1816, 2270, 4540, 8009, 9080, 16018, 32036, 40045, 64072, 80090, 160180, 320360, 1818043, 3636086, 7272172, 9090215, 14544344, 18180430, 36360860, 72721720]

約数ペア:

[(1, 72721720), (2, 36360860), (4, 18180430), (5, 14544344), (8, 9090215), (10, 7272172), (20, 3636086), (40, 1818043), (227, 320360), (454, 160180), (908, 80090), (1135, 64072), (1816, 40045), (2270, 32036), (4540, 16018), (8009, 9080)]