208723970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{347}}^1\times {\mathrm{661}}^1$

素因数の和:1035

約数の個数: 64

約数和(自身を含む): 464438016

約数和(自身を除く): 255714046

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 347, 455, 661, 694, 910, 1322, 1735, 2429, 3305, 3470, 4511, 4627, 4858, 6610, 8593, 9022, 9254, 12145, 17186, 22555, 23135, 24290, 31577, 42965, 45110, 46270, 60151, 63154, 85930, 120302, 157885, 229367, 300755, 315770, 458734, 601510, 1146835, 1605569, 2293670, 2981771, 3211138, 5963542, 8027845, 14908855, 16055690, 20872397, 29817710, 41744794, 104361985, 208723970]

約数ペア:

[(1, 208723970), (2, 104361985), (5, 41744794), (7, 29817710), (10, 20872397), (13, 16055690), (14, 14908855), (26, 8027845), (35, 5963542), (65, 3211138), (70, 2981771), (91, 2293670), (130, 1605569), (182, 1146835), (347, 601510), (455, 458734), (661, 315770), (694, 300755), (910, 229367), (1322, 157885), (1735, 120302), (2429, 85930), (3305, 63154), (3470, 60151), (4511, 46270), (4627, 45110), (4858, 42965), (6610, 31577), (8593, 24290), (9022, 23135), (9254, 22555), (12145, 17186)]