221356120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{178513}}^1$

素因数の和:178555

約数の個数: 32

約数和(自身を含む): 514120320

約数和(自身を除く): 292764200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 178513, 357026, 714052, 892565, 1428104, 1785130, 3570260, 5533903, 7140520, 11067806, 22135612, 27669515, 44271224, 55339030, 110678060, 221356120]

約数ペア:

[(1, 221356120), (2, 110678060), (4, 55339030), (5, 44271224), (8, 27669515), (10, 22135612), (20, 11067806), (31, 7140520), (40, 5533903), (62, 3570260), (124, 1785130), (155, 1428104), (248, 892565), (310, 714052), (620, 357026), (1240, 178513)]