20198368

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:407

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 22137632

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 139, 152, 239, 278, 304, 478, 556, 608, 956, 1112, 1912, 2224, 2641, 3824, 4448, 4541, 5282, 7648, 9082, 10564, 18164, 21128, 33221, 36328, 42256, 66442, 72656, 84512, 132884, 145312, 265768, 531536, 631199, 1063072, 1262398, 2524796, 5049592, 10099184, 20198368]

約数ペア:

[(1, 20198368), (2, 10099184), (4, 5049592), (8, 2524796), (16, 1262398), (19, 1063072), (32, 631199), (38, 531536), (76, 265768), (139, 145312), (152, 132884), (239, 84512), (278, 72656), (304, 66442), (478, 42256), (556, 36328), (608, 33221), (956, 21128), (1112, 18164), (1912, 10564), (2224, 9082), (2641, 7648), (3824, 5282), (4448, 4541)]