21280032

素因数分解:

$2^5\times 3^2\times {\mathrm{37}}^1\times {\mathrm{1997}}^1$

素因数の和:2050

約数の個数: 72

約数和(自身を含む): 62181756

約数和(自身を除く): 40901724

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 37, 48, 72, 74, 96, 111, 144, 148, 222, 288, 296, 333, 444, 592, 666, 888, 1184, 1332, 1776, 1997, 2664, 3552, 3994, 5328, 5991, 7988, 10656, 11982, 15976, 17973, 23964, 31952, 35946, 47928, 63904, 71892, 73889, 95856, 143784, 147778, 191712, 221667, 287568, 295556, 443334, 575136, 591112, 665001, 886668, 1182224, 1330002, 1773336, 2364448, 2660004, 3546672, 5320008, 7093344, 10640016, 21280032]

約数ペア:

[(1, 21280032), (2, 10640016), (3, 7093344), (4, 5320008), (6, 3546672), (8, 2660004), (9, 2364448), (12, 1773336), (16, 1330002), (18, 1182224), (24, 886668), (32, 665001), (36, 591112), (37, 575136), (48, 443334), (72, 295556), (74, 287568), (96, 221667), (111, 191712), (144, 147778), (148, 143784), (222, 95856), (288, 73889), (296, 71892), (333, 63904), (444, 47928), (592, 35946), (666, 31952), (888, 23964), (1184, 17973), (1332, 15976), (1776, 11982), (1997, 10656), (2664, 7988), (3552, 5991), (3994, 5328)]