20258864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{647}}^1$

素因数の和:777

約数の個数: 40

約数和(自身を含む): 41783040

約数和(自身を除く): 21524176

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 103, 152, 206, 304, 412, 647, 824, 1294, 1648, 1957, 2588, 3914, 5176, 7828, 10352, 12293, 15656, 24586, 31312, 49172, 66641, 98344, 133282, 196688, 266564, 533128, 1066256, 1266179, 2532358, 5064716, 10129432, 20258864]

約数ペア:

[(1, 20258864), (2, 10129432), (4, 5064716), (8, 2532358), (16, 1266179), (19, 1066256), (38, 533128), (76, 266564), (103, 196688), (152, 133282), (206, 98344), (304, 66641), (412, 49172), (647, 31312), (824, 24586), (1294, 15656), (1648, 12293), (1957, 10352), (2588, 7828), (3914, 5176)]