19887688

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{257}}^1\times {\mathrm{569}}^1$

素因数の和:849

約数の個数: 32

約数和(自身を含む): 39706200

約数和(自身を除く): 19818512

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 257, 514, 569, 1028, 1138, 2056, 2276, 4369, 4552, 8738, 9673, 17476, 19346, 34952, 38692, 77384, 146233, 292466, 584932, 1169864, 2485961, 4971922, 9943844, 19887688]

約数ペア:

[(1, 19887688), (2, 9943844), (4, 4971922), (8, 2485961), (17, 1169864), (34, 584932), (68, 292466), (136, 146233), (257, 77384), (514, 38692), (569, 34952), (1028, 19346), (1138, 17476), (2056, 9673), (2276, 8738), (4369, 4552)]