80219320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64693}}^1$

素因数の和:64735

約数の個数: 32

約数和(自身を含む): 186318720

約数和(自身を除く): 106099400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 64693, 129386, 258772, 323465, 517544, 646930, 1293860, 2005483, 2587720, 4010966, 8021932, 10027415, 16043864, 20054830, 40109660, 80219320]

約数ペア:

[(1, 80219320), (2, 40109660), (4, 20054830), (5, 16043864), (8, 10027415), (10, 8021932), (20, 4010966), (31, 2587720), (40, 2005483), (62, 1293860), (124, 646930), (155, 517544), (248, 323465), (310, 258772), (620, 129386), (1240, 64693)]