28416843

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 54127008

約数和(自身を除く): 25710165

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 51, 63, 91, 117, 119, 153, 157, 169, 221, 273, 357, 471, 507, 663, 819, 1071, 1099, 1183, 1413, 1521, 1547, 1989, 2041, 2669, 2873, 3297, 3549, 4641, 6123, 8007, 8619, 9891, 10647, 13923, 14287, 18369, 18683, 20111, 24021, 25857, 26533, 34697, 42861, 56049, 60333, 79599, 104091, 128583, 168147, 180999, 185731, 238797, 242879, 312273, 451061, 557193, 728637, 1353183, 1671579, 2185911, 3157427, 4059549, 9472281, 28416843]

約数ペア:

[(1, 28416843), (3, 9472281), (7, 4059549), (9, 3157427), (13, 2185911), (17, 1671579), (21, 1353183), (39, 728637), (51, 557193), (63, 451061), (91, 312273), (117, 242879), (119, 238797), (153, 185731), (157, 180999), (169, 168147), (221, 128583), (273, 104091), (357, 79599), (471, 60333), (507, 56049), (663, 42861), (819, 34697), (1071, 26533), (1099, 25857), (1183, 24021), (1413, 20111), (1521, 18683), (1547, 18369), (1989, 14287), (2041, 13923), (2669, 10647), (2873, 9891), (3297, 8619), (3549, 8007), (4641, 6123)]