19309995

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{691}}^1$

素因数の和:734

約数の個数: 48

約数和(自身を含む): 36271872

約数和(自身を除く): 16961877

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 243, 345, 405, 621, 691, 1035, 1215, 1863, 2073, 3105, 3455, 5589, 6219, 9315, 10365, 15893, 18657, 27945, 31095, 47679, 55971, 79465, 93285, 143037, 167913, 238395, 279855, 429111, 715185, 839565, 1287333, 2145555, 3861999, 6436665, 19309995]

約数ペア:

[(1, 19309995), (3, 6436665), (5, 3861999), (9, 2145555), (15, 1287333), (23, 839565), (27, 715185), (45, 429111), (69, 279855), (81, 238395), (115, 167913), (135, 143037), (207, 93285), (243, 79465), (345, 55971), (405, 47679), (621, 31095), (691, 27945), (1035, 18657), (1215, 15893), (1863, 10365), (2073, 9315), (3105, 6219), (3455, 5589)]