18978840

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{17573}}^1$

素因数の和:17593

約数の個数: 64

約数和(自身を含む): 63266400

約数和(自身を除く): 44287560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 17573, 35146, 52719, 70292, 87865, 105438, 140584, 158157, 175730, 210876, 263595, 316314, 351460, 421752, 474471, 527190, 632628, 702920, 790785, 948942, 1054380, 1265256, 1581570, 1897884, 2108760, 2372355, 3163140, 3795768, 4744710, 6326280, 9489420, 18978840]

約数ペア:

[(1, 18978840), (2, 9489420), (3, 6326280), (4, 4744710), (5, 3795768), (6, 3163140), (8, 2372355), (9, 2108760), (10, 1897884), (12, 1581570), (15, 1265256), (18, 1054380), (20, 948942), (24, 790785), (27, 702920), (30, 632628), (36, 527190), (40, 474471), (45, 421752), (54, 351460), (60, 316314), (72, 263595), (90, 210876), (108, 175730), (120, 158157), (135, 140584), (180, 105438), (216, 87865), (270, 70292), (360, 52719), (540, 35146), (1080, 17573)]