20571120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28571}}^1$

素因数の和:28590

約数の個数: 60

約数和(自身を含む): 69087096

約数和(自身を除く): 48515976

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28571, 57142, 85713, 114284, 142855, 171426, 228568, 257139, 285710, 342852, 428565, 457136, 514278, 571420, 685704, 857130, 1028556, 1142840, 1285695, 1371408, 1714260, 2057112, 2285680, 2571390, 3428520, 4114224, 5142780, 6857040, 10285560, 20571120]

約数ペア:

[(1, 20571120), (2, 10285560), (3, 6857040), (4, 5142780), (5, 4114224), (6, 3428520), (8, 2571390), (9, 2285680), (10, 2057112), (12, 1714260), (15, 1371408), (16, 1285695), (18, 1142840), (20, 1028556), (24, 857130), (30, 685704), (36, 571420), (40, 514278), (45, 457136), (48, 428565), (60, 342852), (72, 285710), (80, 257139), (90, 228568), (120, 171426), (144, 142855), (180, 114284), (240, 85713), (360, 57142), (720, 28571)]