19804560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{179}}^1\times {\mathrm{461}}^1$

素因数の和:656

約数の個数: 80

約数和(自身を含む): 61871040

約数和(自身を除く): 42066480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 179, 240, 358, 461, 537, 716, 895, 922, 1074, 1383, 1432, 1790, 1844, 2148, 2305, 2685, 2766, 2864, 3580, 3688, 4296, 4610, 5370, 5532, 6915, 7160, 7376, 8592, 9220, 10740, 11064, 13830, 14320, 18440, 21480, 22128, 27660, 36880, 42960, 55320, 82519, 110640, 165038, 247557, 330076, 412595, 495114, 660152, 825190, 990228, 1237785, 1320304, 1650380, 1980456, 2475570, 3300760, 3960912, 4951140, 6601520, 9902280, 19804560]

約数ペア:

[(1, 19804560), (2, 9902280), (3, 6601520), (4, 4951140), (5, 3960912), (6, 3300760), (8, 2475570), (10, 1980456), (12, 1650380), (15, 1320304), (16, 1237785), (20, 990228), (24, 825190), (30, 660152), (40, 495114), (48, 412595), (60, 330076), (80, 247557), (120, 165038), (179, 110640), (240, 82519), (358, 55320), (461, 42960), (537, 36880), (716, 27660), (895, 22128), (922, 21480), (1074, 18440), (1383, 14320), (1432, 13830), (1790, 11064), (1844, 10740), (2148, 9220), (2305, 8592), (2685, 7376), (2766, 7160), (2864, 6915), (3580, 5532), (3688, 5370), (4296, 4610)]