21380400

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{5939}}^1$

素因数の和:5963

約数の個数: 90

約数和(自身を含む): 74208420

約数和(自身を除く): 52828020

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 60, 72, 75, 80, 90, 100, 120, 144, 150, 180, 200, 225, 240, 300, 360, 400, 450, 600, 720, 900, 1200, 1800, 3600, 5939, 11878, 17817, 23756, 29695, 35634, 47512, 53451, 59390, 71268, 89085, 95024, 106902, 118780, 142536, 148475, 178170, 213804, 237560, 267255, 285072, 296950, 356340, 427608, 445425, 475120, 534510, 593900, 712680, 855216, 890850, 1069020, 1187800, 1336275, 1425360, 1781700, 2138040, 2375600, 2672550, 3563400, 4276080, 5345100, 7126800, 10690200, 21380400]

約数ペア:

[(1, 21380400), (2, 10690200), (3, 7126800), (4, 5345100), (5, 4276080), (6, 3563400), (8, 2672550), (9, 2375600), (10, 2138040), (12, 1781700), (15, 1425360), (16, 1336275), (18, 1187800), (20, 1069020), (24, 890850), (25, 855216), (30, 712680), (36, 593900), (40, 534510), (45, 475120), (48, 445425), (50, 427608), (60, 356340), (72, 296950), (75, 285072), (80, 267255), (90, 237560), (100, 213804), (120, 178170), (144, 148475), (150, 142536), (180, 118780), (200, 106902), (225, 95024), (240, 89085), (300, 71268), (360, 59390), (400, 53451), (450, 47512), (600, 35634), (720, 29695), (900, 23756), (1200, 17817), (1800, 11878), (3600, 5939)]