17990492

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 36220800

約数和(自身を除く): 18230308

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 131, 139, 247, 262, 278, 494, 524, 556, 988, 1703, 1807, 2489, 2641, 3406, 3614, 4978, 5282, 6812, 7228, 9956, 10564, 18209, 32357, 34333, 36418, 64714, 68666, 72836, 129428, 137332, 236717, 345971, 473434, 691942, 946868, 1383884, 4497623, 8995246, 17990492]

約数ペア:

[(1, 17990492), (2, 8995246), (4, 4497623), (13, 1383884), (19, 946868), (26, 691942), (38, 473434), (52, 345971), (76, 236717), (131, 137332), (139, 129428), (247, 72836), (262, 68666), (278, 64714), (494, 36418), (524, 34333), (556, 32357), (988, 18209), (1703, 10564), (1807, 9956), (2489, 7228), (2641, 6812), (3406, 5282), (3614, 4978)]