21978720

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{15263}}^1$

素因数の和:15284

約数の個数: 72

約数和(自身を含む): 75007296

約数和(自身を除く): 53028576

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 15263, 30526, 45789, 61052, 76315, 91578, 122104, 137367, 152630, 183156, 228945, 244208, 274734, 305260, 366312, 457890, 488416, 549468, 610520, 686835, 732624, 915780, 1098936, 1221040, 1373670, 1465248, 1831560, 2197872, 2442080, 2747340, 3663120, 4395744, 5494680, 7326240, 10989360, 21978720]

約数ペア:

[(1, 21978720), (2, 10989360), (3, 7326240), (4, 5494680), (5, 4395744), (6, 3663120), (8, 2747340), (9, 2442080), (10, 2197872), (12, 1831560), (15, 1465248), (16, 1373670), (18, 1221040), (20, 1098936), (24, 915780), (30, 732624), (32, 686835), (36, 610520), (40, 549468), (45, 488416), (48, 457890), (60, 366312), (72, 305260), (80, 274734), (90, 244208), (96, 228945), (120, 183156), (144, 152630), (160, 137367), (180, 122104), (240, 91578), (288, 76315), (360, 61052), (480, 45789), (720, 30526), (1440, 15263)]