19655536

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{569}}^1$

素因数の和:721

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 21056144

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 127, 136, 254, 272, 508, 569, 1016, 1138, 2032, 2159, 2276, 4318, 4552, 8636, 9104, 9673, 17272, 19346, 34544, 38692, 72263, 77384, 144526, 154768, 289052, 578104, 1156208, 1228471, 2456942, 4913884, 9827768, 19655536]

約数ペア:

[(1, 19655536), (2, 9827768), (4, 4913884), (8, 2456942), (16, 1228471), (17, 1156208), (34, 578104), (68, 289052), (127, 154768), (136, 144526), (254, 77384), (272, 72263), (508, 38692), (569, 34544), (1016, 19346), (1138, 17272), (2032, 9673), (2159, 9104), (2276, 8636), (4318, 4552)]