20181971808

素因数分解:

$2^5\times 3^2\times {\mathrm{277}}^1\times {\mathrm{252983}}^1$

素因数の和:253276

約数の個数: 72

約数和(自身を含む): 57599903088

約数和(自身を除く): 37417931280

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 277, 288, 554, 831, 1108, 1662, 2216, 2493, 3324, 4432, 4986, 6648, 8864, 9972, 13296, 19944, 26592, 39888, 79776, 252983, 505966, 758949, 1011932, 1517898, 2023864, 2276847, 3035796, 4047728, 4553694, 6071592, 8095456, 9107388, 12143184, 18214776, 24286368, 36429552, 70076291, 72859104, 140152582, 210228873, 280305164, 420457746, 560610328, 630686619, 840915492, 1121220656, 1261373238, 1681830984, 2242441312, 2522746476, 3363661968, 5045492952, 6727323936, 10090985904, 20181971808]

約数ペア:

[(1, 20181971808), (2, 10090985904), (3, 6727323936), (4, 5045492952), (6, 3363661968), (8, 2522746476), (9, 2242441312), (12, 1681830984), (16, 1261373238), (18, 1121220656), (24, 840915492), (32, 630686619), (36, 560610328), (48, 420457746), (72, 280305164), (96, 210228873), (144, 140152582), (277, 72859104), (288, 70076291), (554, 36429552), (831, 24286368), (1108, 18214776), (1662, 12143184), (2216, 9107388), (2493, 8095456), (3324, 6071592), (4432, 4553694), (4986, 4047728), (6648, 3035796), (8864, 2276847), (9972, 2023864), (13296, 1517898), (19944, 1011932), (26592, 758949), (39888, 505966), (79776, 252983)]