20443440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{827}}^1$

素因数の和:946

約数の個数: 80

約数和(自身を含む): 64067328

約数和(自身を除く): 43623888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 103, 120, 206, 240, 309, 412, 515, 618, 824, 827, 1030, 1236, 1545, 1648, 1654, 2060, 2472, 2481, 3090, 3308, 4120, 4135, 4944, 4962, 6180, 6616, 8240, 8270, 9924, 12360, 12405, 13232, 16540, 19848, 24720, 24810, 33080, 39696, 49620, 66160, 85181, 99240, 170362, 198480, 255543, 340724, 425905, 511086, 681448, 851810, 1022172, 1277715, 1362896, 1703620, 2044344, 2555430, 3407240, 4088688, 5110860, 6814480, 10221720, 20443440]

約数ペア:

[(1, 20443440), (2, 10221720), (3, 6814480), (4, 5110860), (5, 4088688), (6, 3407240), (8, 2555430), (10, 2044344), (12, 1703620), (15, 1362896), (16, 1277715), (20, 1022172), (24, 851810), (30, 681448), (40, 511086), (48, 425905), (60, 340724), (80, 255543), (103, 198480), (120, 170362), (206, 99240), (240, 85181), (309, 66160), (412, 49620), (515, 39696), (618, 33080), (824, 24810), (827, 24720), (1030, 19848), (1236, 16540), (1545, 13232), (1648, 12405), (1654, 12360), (2060, 9924), (2472, 8270), (2481, 8240), (3090, 6616), (3308, 6180), (4120, 4962), (4135, 4944)]