20161519120

素因数分解:

$2^4\times 5^1\times {\mathrm{4001}}^1\times {\mathrm{62989}}^1$

素因数の和:67003

約数の個数: 40

約数和(自身を含む): 46887992280

約数和(自身を除く): 26726473160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4001, 8002, 16004, 20005, 32008, 40010, 62989, 64016, 80020, 125978, 160040, 251956, 314945, 320080, 503912, 629890, 1007824, 1259780, 2519560, 5039120, 252018989, 504037978, 1008075956, 1260094945, 2016151912, 2520189890, 4032303824, 5040379780, 10080759560, 20161519120]

約数ペア:

[(1, 20161519120), (2, 10080759560), (4, 5040379780), (5, 4032303824), (8, 2520189890), (10, 2016151912), (16, 1260094945), (20, 1008075956), (40, 504037978), (80, 252018989), (4001, 5039120), (8002, 2519560), (16004, 1259780), (20005, 1007824), (32008, 629890), (40010, 503912), (62989, 320080), (64016, 314945), (80020, 251956), (125978, 160040)]