19896040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{557}}^1$

素因数の和:634

約数の個数: 64

約数和(自身を含む): 48211200

約数和(自身を除く): 28315160

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 557, 760, 893, 940, 1114, 1786, 1880, 2228, 2785, 3572, 4456, 4465, 5570, 7144, 8930, 10583, 11140, 17860, 21166, 22280, 26179, 35720, 42332, 52358, 52915, 84664, 104716, 105830, 130895, 209432, 211660, 261790, 423320, 497401, 523580, 994802, 1047160, 1989604, 2487005, 3979208, 4974010, 9948020, 19896040]

約数ペア:

[(1, 19896040), (2, 9948020), (4, 4974010), (5, 3979208), (8, 2487005), (10, 1989604), (19, 1047160), (20, 994802), (38, 523580), (40, 497401), (47, 423320), (76, 261790), (94, 211660), (95, 209432), (152, 130895), (188, 105830), (190, 104716), (235, 84664), (376, 52915), (380, 52358), (470, 42332), (557, 35720), (760, 26179), (893, 22280), (940, 21166), (1114, 17860), (1786, 11140), (1880, 10583), (2228, 8930), (2785, 7144), (3572, 5570), (4456, 4465)]