16445680

素因数分解:

$2^4\times 5^1\times {\mathrm{311}}^1\times {\mathrm{661}}^1$

素因数の和:985

約数の個数: 40

約数和(自身を含む): 38417184

約数和(自身を除く): 21971504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 311, 622, 661, 1244, 1322, 1555, 2488, 2644, 3110, 3305, 4976, 5288, 6220, 6610, 10576, 12440, 13220, 24880, 26440, 52880, 205571, 411142, 822284, 1027855, 1644568, 2055710, 3289136, 4111420, 8222840, 16445680]

約数ペア:

[(1, 16445680), (2, 8222840), (4, 4111420), (5, 3289136), (8, 2055710), (10, 1644568), (16, 1027855), (20, 822284), (40, 411142), (80, 205571), (311, 52880), (622, 26440), (661, 24880), (1244, 13220), (1322, 12440), (1555, 10576), (2488, 6610), (2644, 6220), (3110, 5288), (3305, 4976)]