19844864

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 72

約数和(自身を含む): 43782480

約数和(自身を除く): 23937616

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 67, 89, 104, 128, 134, 178, 208, 256, 268, 356, 416, 536, 712, 832, 871, 1072, 1157, 1424, 1664, 1742, 2144, 2314, 2848, 3328, 3484, 4288, 4628, 5696, 5963, 6968, 8576, 9256, 11392, 11926, 13936, 17152, 18512, 22784, 23852, 27872, 37024, 47704, 55744, 74048, 77519, 95408, 111488, 148096, 155038, 190816, 222976, 296192, 310076, 381632, 620152, 763264, 1240304, 1526528, 2480608, 4961216, 9922432, 19844864]

約数ペア:

[(1, 19844864), (2, 9922432), (4, 4961216), (8, 2480608), (13, 1526528), (16, 1240304), (26, 763264), (32, 620152), (52, 381632), (64, 310076), (67, 296192), (89, 222976), (104, 190816), (128, 155038), (134, 148096), (178, 111488), (208, 95408), (256, 77519), (268, 74048), (356, 55744), (416, 47704), (536, 37024), (712, 27872), (832, 23852), (871, 22784), (1072, 18512), (1157, 17152), (1424, 13936), (1664, 11926), (1742, 11392), (2144, 9256), (2314, 8576), (2848, 6968), (3328, 5963), (3484, 5696), (4288, 4628)]