20640984

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{727}}^1$

素因数の和:769

約数の個数: 96

約数和(自身を含む): 63947520

約数和(自身を除く): 43306536

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 78, 84, 91, 104, 156, 168, 169, 182, 273, 312, 338, 364, 507, 546, 676, 727, 728, 1014, 1092, 1183, 1352, 1454, 2028, 2181, 2184, 2366, 2908, 3549, 4056, 4362, 4732, 5089, 5816, 7098, 8724, 9451, 9464, 10178, 14196, 15267, 17448, 18902, 20356, 28353, 28392, 30534, 37804, 40712, 56706, 61068, 66157, 75608, 113412, 122136, 122863, 132314, 198471, 226824, 245726, 264628, 368589, 396942, 491452, 529256, 737178, 793884, 860041, 982904, 1474356, 1587768, 1720082, 2580123, 2948712, 3440164, 5160246, 6880328, 10320492, 20640984]

約数ペア:

[(1, 20640984), (2, 10320492), (3, 6880328), (4, 5160246), (6, 3440164), (7, 2948712), (8, 2580123), (12, 1720082), (13, 1587768), (14, 1474356), (21, 982904), (24, 860041), (26, 793884), (28, 737178), (39, 529256), (42, 491452), (52, 396942), (56, 368589), (78, 264628), (84, 245726), (91, 226824), (104, 198471), (156, 132314), (168, 122863), (169, 122136), (182, 113412), (273, 75608), (312, 66157), (338, 61068), (364, 56706), (507, 40712), (546, 37804), (676, 30534), (727, 28392), (728, 28353), (1014, 20356), (1092, 18902), (1183, 17448), (1352, 15267), (1454, 14196), (2028, 10178), (2181, 9464), (2184, 9451), (2366, 8724), (2908, 7098), (3549, 5816), (4056, 5089), (4362, 4732)]