19987172

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1$

素因数の和:236

約数の個数: 48

約数和(自身を含む): 38864448

約数和(自身を除く): 18877276

約数列:

[1, 2, 4, 17, 34, 41, 67, 68, 82, 107, 134, 164, 214, 268, 428, 697, 1139, 1394, 1819, 2278, 2747, 2788, 3638, 4387, 4556, 5494, 7169, 7276, 8774, 10988, 14338, 17548, 28676, 46699, 74579, 93398, 121873, 149158, 186796, 243746, 293929, 298316, 487492, 587858, 1175716, 4996793, 9993586, 19987172]

約数ペア:

[(1, 19987172), (2, 9993586), (4, 4996793), (17, 1175716), (34, 587858), (41, 487492), (67, 298316), (68, 293929), (82, 243746), (107, 186796), (134, 149158), (164, 121873), (214, 93398), (268, 74579), (428, 46699), (697, 28676), (1139, 17548), (1394, 14338), (1819, 10988), (2278, 8774), (2747, 7276), (2788, 7169), (3638, 5494), (4387, 4556)]