10990120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8863}}^1$

素因数の和:8905

約数の個数: 32

約数和(自身を含む): 25528320

約数和(自身を除く): 14538200

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 8863, 17726, 35452, 44315, 70904, 88630, 177260, 274753, 354520, 549506, 1099012, 1373765, 2198024, 2747530, 5495060, 10990120]

約数ペア:

[(1, 10990120), (2, 5495060), (4, 2747530), (5, 2198024), (8, 1373765), (10, 1099012), (20, 549506), (31, 354520), (40, 274753), (62, 177260), (124, 88630), (155, 70904), (248, 44315), (310, 35452), (620, 17726), (1240, 8863)]