19985280

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{1487}}^1$

素因数の和:1516

約数の個数: 128

約数和(自身を含む): 72852480

約数和(自身を除く): 52867200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1487, 1680, 1920, 2240, 2688, 2974, 3360, 4461, 4480, 5948, 6720, 7435, 8922, 10409, 11896, 13440, 14870, 17844, 20818, 22305, 23792, 29740, 31227, 35688, 41636, 44610, 47584, 52045, 59480, 62454, 71376, 83272, 89220, 95168, 104090, 118960, 124908, 142752, 156135, 166544, 178440, 190336, 208180, 237920, 249816, 285504, 312270, 333088, 356880, 416360, 475840, 499632, 571008, 624540, 666176, 713760, 832720, 951680, 999264, 1249080, 1332352, 1427520, 1665440, 1998528, 2498160, 2855040, 3330880, 3997056, 4996320, 6661760, 9992640, 19985280]

約数ペア:

[(1, 19985280), (2, 9992640), (3, 6661760), (4, 4996320), (5, 3997056), (6, 3330880), (7, 2855040), (8, 2498160), (10, 1998528), (12, 1665440), (14, 1427520), (15, 1332352), (16, 1249080), (20, 999264), (21, 951680), (24, 832720), (28, 713760), (30, 666176), (32, 624540), (35, 571008), (40, 499632), (42, 475840), (48, 416360), (56, 356880), (60, 333088), (64, 312270), (70, 285504), (80, 249816), (84, 237920), (96, 208180), (105, 190336), (112, 178440), (120, 166544), (128, 156135), (140, 142752), (160, 124908), (168, 118960), (192, 104090), (210, 95168), (224, 89220), (240, 83272), (280, 71376), (320, 62454), (336, 59480), (384, 52045), (420, 47584), (448, 44610), (480, 41636), (560, 35688), (640, 31227), (672, 29740), (840, 23792), (896, 22305), (960, 20818), (1120, 17844), (1344, 14870), (1487, 13440), (1680, 11896), (1920, 10409), (2240, 8922), (2688, 7435), (2974, 6720), (3360, 5948), (4461, 4480)]