18875870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 20315170

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 59, 65, 107, 115, 118, 130, 214, 230, 295, 299, 535, 590, 598, 767, 1070, 1357, 1391, 1495, 1534, 2461, 2714, 2782, 2990, 3835, 4922, 6313, 6785, 6955, 7670, 12305, 12626, 13570, 13910, 17641, 24610, 31565, 31993, 35282, 63130, 63986, 82069, 88205, 145199, 159965, 164138, 176410, 290398, 319930, 410345, 725995, 820690, 1451990, 1887587, 3775174, 9437935, 18875870]

約数ペア:

[(1, 18875870), (2, 9437935), (5, 3775174), (10, 1887587), (13, 1451990), (23, 820690), (26, 725995), (46, 410345), (59, 319930), (65, 290398), (107, 176410), (115, 164138), (118, 159965), (130, 145199), (214, 88205), (230, 82069), (295, 63986), (299, 63130), (535, 35282), (590, 31993), (598, 31565), (767, 24610), (1070, 17641), (1357, 13910), (1391, 13570), (1495, 12626), (1534, 12305), (2461, 7670), (2714, 6955), (2782, 6785), (2990, 6313), (3835, 4922)]