19915168

素因数分解:

$2^5\times 7^2\times {\mathrm{13}}^1\times {\mathrm{977}}^1$

素因数の和:1014

約数の個数: 72

約数和(自身を含む): 49167972

約数和(自身を除く): 29252804

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 224, 364, 392, 416, 637, 728, 784, 977, 1274, 1456, 1568, 1954, 2548, 2912, 3908, 5096, 6839, 7816, 10192, 12701, 13678, 15632, 20384, 25402, 27356, 31264, 47873, 50804, 54712, 88907, 95746, 101608, 109424, 177814, 191492, 203216, 218848, 355628, 382984, 406432, 622349, 711256, 765968, 1244698, 1422512, 1531936, 2489396, 2845024, 4978792, 9957584, 19915168]

約数ペア:

[(1, 19915168), (2, 9957584), (4, 4978792), (7, 2845024), (8, 2489396), (13, 1531936), (14, 1422512), (16, 1244698), (26, 765968), (28, 711256), (32, 622349), (49, 406432), (52, 382984), (56, 355628), (91, 218848), (98, 203216), (104, 191492), (112, 177814), (182, 109424), (196, 101608), (208, 95746), (224, 88907), (364, 54712), (392, 50804), (416, 47873), (637, 31264), (728, 27356), (784, 25402), (977, 20384), (1274, 15632), (1456, 13678), (1568, 12701), (1954, 10192), (2548, 7816), (2912, 6839), (3908, 5096)]