19945744

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:157

約数の個数: 120

約数和(自身を含む): 51455040

約数和(自身を除く): 31509296

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 19, 26, 28, 38, 49, 52, 56, 76, 91, 98, 103, 104, 112, 133, 152, 182, 196, 206, 208, 247, 266, 304, 364, 392, 412, 494, 532, 637, 721, 728, 784, 824, 931, 988, 1064, 1274, 1339, 1442, 1456, 1648, 1729, 1862, 1957, 1976, 2128, 2548, 2678, 2884, 3458, 3724, 3914, 3952, 5047, 5096, 5356, 5768, 6916, 7448, 7828, 9373, 10094, 10192, 10712, 11536, 12103, 13699, 13832, 14896, 15656, 18746, 20188, 21424, 24206, 25441, 27398, 27664, 31312, 37492, 40376, 48412, 50882, 54796, 65611, 74984, 80752, 95893, 96824, 101764, 109592, 131222, 149968, 178087, 191786, 193648, 203528, 219184, 262444, 356174, 383572, 407056, 524888, 712348, 767144, 1049776, 1246609, 1424696, 1534288, 2493218, 2849392, 4986436, 9972872, 19945744]

約数ペア:

[(1, 19945744), (2, 9972872), (4, 4986436), (7, 2849392), (8, 2493218), (13, 1534288), (14, 1424696), (16, 1246609), (19, 1049776), (26, 767144), (28, 712348), (38, 524888), (49, 407056), (52, 383572), (56, 356174), (76, 262444), (91, 219184), (98, 203528), (103, 193648), (104, 191786), (112, 178087), (133, 149968), (152, 131222), (182, 109592), (196, 101764), (206, 96824), (208, 95893), (247, 80752), (266, 74984), (304, 65611), (364, 54796), (392, 50882), (412, 48412), (494, 40376), (532, 37492), (637, 31312), (721, 27664), (728, 27398), (784, 25441), (824, 24206), (931, 21424), (988, 20188), (1064, 18746), (1274, 15656), (1339, 14896), (1442, 13832), (1456, 13699), (1648, 12103), (1729, 11536), (1862, 10712), (1957, 10192), (1976, 10094), (2128, 9373), (2548, 7828), (2678, 7448), (2884, 6916), (3458, 5768), (3724, 5356), (3914, 5096), (3952, 5047)]