18720

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1$

素因数の和:34

約数の個数: 72

約数和(自身を含む): 68796

約数和(自身を除く): 50076

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1170, 1248, 1440, 1560, 1872, 2080, 2340, 3120, 3744, 4680, 6240, 9360, 18720]

約数ペア:

[(1, 18720), (2, 9360), (3, 6240), (4, 4680), (5, 3744), (6, 3120), (8, 2340), (9, 2080), (10, 1872), (12, 1560), (13, 1440), (15, 1248), (16, 1170), (18, 1040), (20, 936), (24, 780), (26, 720), (30, 624), (32, 585), (36, 520), (39, 480), (40, 468), (45, 416), (48, 390), (52, 360), (60, 312), (65, 288), (72, 260), (78, 240), (80, 234), (90, 208), (96, 195), (104, 180), (117, 160), (120, 156), (130, 144)]