19957184

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{83}}^1$

素因数の和:142

約数の個数: 84

約数和(自身を含む): 45851064

約数和(自身を除く): 25893880

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 83, 104, 136, 166, 208, 221, 272, 289, 332, 416, 442, 544, 578, 664, 832, 884, 1079, 1088, 1156, 1328, 1411, 1768, 2158, 2312, 2656, 2822, 3536, 3757, 4316, 4624, 5312, 5644, 7072, 7514, 8632, 9248, 11288, 14144, 15028, 17264, 18343, 18496, 22576, 23987, 30056, 34528, 36686, 45152, 47974, 60112, 69056, 73372, 90304, 95948, 120224, 146744, 191896, 240448, 293488, 311831, 383792, 586976, 623662, 767584, 1173952, 1247324, 1535168, 2494648, 4989296, 9978592, 19957184]

約数ペア:

[(1, 19957184), (2, 9978592), (4, 4989296), (8, 2494648), (13, 1535168), (16, 1247324), (17, 1173952), (26, 767584), (32, 623662), (34, 586976), (52, 383792), (64, 311831), (68, 293488), (83, 240448), (104, 191896), (136, 146744), (166, 120224), (208, 95948), (221, 90304), (272, 73372), (289, 69056), (332, 60112), (416, 47974), (442, 45152), (544, 36686), (578, 34528), (664, 30056), (832, 23987), (884, 22576), (1079, 18496), (1088, 18343), (1156, 17264), (1328, 15028), (1411, 14144), (1768, 11288), (2158, 9248), (2312, 8632), (2656, 7514), (2822, 7072), (3536, 5644), (3757, 5312), (4316, 4624)]