19787728

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3163}}^1$

素因数の和:3211

約数の個数: 40

約数和(自身を含む): 42372288

約数和(自身を除く): 22584560

約数列:

[1, 2, 4, 8, 16, 17, 23, 34, 46, 68, 92, 136, 184, 272, 368, 391, 782, 1564, 3128, 3163, 6256, 6326, 12652, 25304, 50608, 53771, 72749, 107542, 145498, 215084, 290996, 430168, 581992, 860336, 1163984, 1236733, 2473466, 4946932, 9893864, 19787728]

約数ペア:

[(1, 19787728), (2, 9893864), (4, 4946932), (8, 2473466), (16, 1236733), (17, 1163984), (23, 860336), (34, 581992), (46, 430168), (68, 290996), (92, 215084), (136, 145498), (184, 107542), (272, 72749), (368, 53771), (391, 50608), (782, 25304), (1564, 12652), (3128, 6326), (3163, 6256)]