200721680

素因数分解:

$2^4\times 5^1\times {\mathrm{691}}^1\times {\mathrm{3631}}^1$

素因数の和:4335

約数の個数: 40

約数和(自身を含む): 467481984

約数和(自身を除く): 266760304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 691, 1382, 2764, 3455, 3631, 5528, 6910, 7262, 11056, 13820, 14524, 18155, 27640, 29048, 36310, 55280, 58096, 72620, 145240, 290480, 2509021, 5018042, 10036084, 12545105, 20072168, 25090210, 40144336, 50180420, 100360840, 200721680]

約数ペア:

[(1, 200721680), (2, 100360840), (4, 50180420), (5, 40144336), (8, 25090210), (10, 20072168), (16, 12545105), (20, 10036084), (40, 5018042), (80, 2509021), (691, 290480), (1382, 145240), (2764, 72620), (3455, 58096), (3631, 55280), (5528, 36310), (6910, 29048), (7262, 27640), (11056, 18155), (13820, 14524)]