18774808

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 40642560

約数和(自身を除く): 21867752

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 47, 52, 92, 94, 104, 167, 184, 188, 299, 334, 376, 598, 611, 668, 1081, 1196, 1222, 1336, 2162, 2171, 2392, 2444, 3841, 4324, 4342, 4888, 7682, 7849, 8648, 8684, 14053, 15364, 15698, 17368, 28106, 30728, 31396, 49933, 56212, 62792, 99866, 102037, 112424, 180527, 199732, 204074, 361054, 399464, 408148, 722108, 816296, 1444216, 2346851, 4693702, 9387404, 18774808]

約数ペア:

[(1, 18774808), (2, 9387404), (4, 4693702), (8, 2346851), (13, 1444216), (23, 816296), (26, 722108), (46, 408148), (47, 399464), (52, 361054), (92, 204074), (94, 199732), (104, 180527), (167, 112424), (184, 102037), (188, 99866), (299, 62792), (334, 56212), (376, 49933), (598, 31396), (611, 30728), (668, 28106), (1081, 17368), (1196, 15698), (1222, 15364), (1336, 14053), (2162, 8684), (2171, 8648), (2392, 7849), (2444, 7682), (3841, 4888), (4324, 4342)]