19918574

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{661}}^1$

素因数の和:756

約数の個数: 32

約数和(自身を含む): 34476960

約数和(自身を除く): 14558386

約数列:

[1, 2, 13, 19, 26, 38, 61, 122, 247, 494, 661, 793, 1159, 1322, 1586, 2318, 8593, 12559, 15067, 17186, 25118, 30134, 40321, 80642, 163267, 326534, 524173, 766099, 1048346, 1532198, 9959287, 19918574]

約数ペア:

[(1, 19918574), (2, 9959287), (13, 1532198), (19, 1048346), (26, 766099), (38, 524173), (61, 326534), (122, 163267), (247, 80642), (494, 40321), (661, 30134), (793, 25118), (1159, 17186), (1322, 15067), (1586, 12559), (2318, 8593)]