15811920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{21961}}^1$

素因数の和:21980

約数の個数: 60

約数和(自身を含む): 53104116

約数和(自身を除く): 37292196

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, 21961, 43922, 65883, 87844, 109805, 131766, 175688, 197649, 219610, 263532, 329415, 351376, 395298, 439220, 527064, 658830, 790596, 878440, 988245, 1054128, 1317660, 1581192, 1756880, 1976490, 2635320, 3162384, 3952980, 5270640, 7905960, 15811920]

約数ペア:

[(1, 15811920), (2, 7905960), (3, 5270640), (4, 3952980), (5, 3162384), (6, 2635320), (8, 1976490), (9, 1756880), (10, 1581192), (12, 1317660), (15, 1054128), (16, 988245), (18, 878440), (20, 790596), (24, 658830), (30, 527064), (36, 439220), (40, 395298), (45, 351376), (48, 329415), (60, 263532), (72, 219610), (80, 197649), (90, 175688), (120, 131766), (144, 109805), (180, 87844), (240, 65883), (360, 43922), (720, 21961)]